Home / 829,205.80-1,243,808.70-268,240.30

Finding the Fourth Proportional to 829,205.80, 1,243,808.70 and 268,240.30

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Solution

The fourth proportional to 829,205.80, 1,243,808.70 and 268,240.30 is: 402,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,205.80 : 1,243,808.70 = 268,240.30 : x
  2. Step 2: Convert to fraction form
    829,205.80/1,243,808.70 = 268,240.30/x
  3. Step 3: Cross multiply
    829,205.80x = 1,243,808.70 × 268,240.30
  4. Step 4: Simplify right side
    829,205.80x = 333,639,618,830.61
  5. Step 5: Solve for x
    x = 333,639,618,830.61/829,205.80
  6. Step 6: Final answer
    x = 402,360.45

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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.