Home / 1,098,005.40-1,647,008.10-424,117.80

Finding the Fourth Proportional to 1,098,005.40, 1,647,008.10 and 424,117.80

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Solution

The fourth proportional to 1,098,005.40, 1,647,008.10 and 424,117.80 is: 636,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,005.40 : 1,647,008.10 = 424,117.80 : x
  2. Step 2: Convert to fraction form
    1,098,005.40/1,647,008.10 = 424,117.80/x
  3. Step 3: Cross multiply
    1,098,005.40x = 1,647,008.10 × 424,117.80
  4. Step 4: Simplify right side
    1,098,005.40x = 698,525,451,954.18
  5. Step 5: Solve for x
    x = 698,525,451,954.18/1,098,005.40
  6. Step 6: Final answer
    x = 636,176.70

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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.