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Finding the Fourth Proportional to 713,538.31, 984,996.84 and 499,518.49

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Solution

The fourth proportional to 713,538.31, 984,996.84 and 499,518.49 is: 689,555.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,538.31 : 984,996.84 = 499,518.49 : x
  2. Step 2: Convert to fraction form
    713,538.31/984,996.84 = 499,518.49/x
  3. Step 3: Cross multiply
    713,538.31x = 984,996.84 × 499,518.49
  4. Step 4: Simplify right side
    713,538.31x = 492,024,134,171.57
  5. Step 5: Solve for x
    x = 492,024,134,171.57/713,538.31
  6. Step 6: Final answer
    x = 689,555.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.