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Finding the Fourth Proportional to 713,404.26, 984,497.64 and 391,107.44

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Solution

The fourth proportional to 713,404.26, 984,497.64 and 391,107.44 is: 539,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,404.26 : 984,497.64 = 391,107.44 : x
  2. Step 2: Convert to fraction form
    713,404.26/984,497.64 = 391,107.44/x
  3. Step 3: Cross multiply
    713,404.26x = 984,497.64 × 391,107.44
  4. Step 4: Simplify right side
    713,404.26x = 385,044,349,323.21
  5. Step 5: Solve for x
    x = 385,044,349,323.21/713,404.26
  6. Step 6: Final answer
    x = 539,728.13

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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.