Home / 713,711.91-984,935.07-391,419.21

Finding the Fourth Proportional to 713,711.91, 984,935.07 and 391,419.21

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Solution

The fourth proportional to 713,711.91, 984,935.07 and 391,419.21 is: 540,165.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,711.91 : 984,935.07 = 391,419.21 : x
  2. Step 2: Convert to fraction form
    713,711.91/984,935.07 = 391,419.21/x
  3. Step 3: Cross multiply
    713,711.91x = 984,935.07 × 391,419.21
  4. Step 4: Simplify right side
    713,711.91x = 385,522,507,000.70
  5. Step 5: Solve for x
    x = 385,522,507,000.70/713,711.91
  6. Step 6: Final answer
    x = 540,165.44

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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.