Home / 1,086,402,811.80-1,629,604,217.70-396,332,578.20

Finding the Fourth Proportional to 1,086,402,811.80, 1,629,604,217.70 and 396,332,578.20

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Solution

The fourth proportional to 1,086,402,811.80, 1,629,604,217.70 and 396,332,578.20 is: 594,498,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,402,811.80 : 1,629,604,217.70 = 396,332,578.20 : x
  2. Step 2: Convert to fraction form
    1,086,402,811.80/1,629,604,217.70 = 396,332,578.20/x
  3. Step 3: Cross multiply
    1,086,402,811.80x = 1,629,604,217.70 × 396,332,578.20
  4. Step 4: Simplify right side
    1,086,402,811.80x = 645,865,241,046,635,136
  5. Step 5: Solve for x
    x = 645,865,241,046,635,136/1,086,402,811.80
  6. Step 6: Final answer
    x = 594,498,867.30

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.