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Finding the Fourth Proportional to 713,404.23, 984,497.59 and 391,107.40

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Solution

The fourth proportional to 713,404.23, 984,497.59 and 391,107.40 is: 539,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,404.23 : 984,497.59 = 391,107.40 : x
  2. Step 2: Convert to fraction form
    713,404.23/984,497.59 = 391,107.40/x
  3. Step 3: Cross multiply
    713,404.23x = 984,497.59 × 391,107.40
  4. Step 4: Simplify right side
    713,404.23x = 385,044,292,731.17
  5. Step 5: Solve for x
    x = 385,044,292,731.17/713,404.23
  6. Step 6: Final answer
    x = 539,728.08

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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.