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Finding the Fourth Proportional to 713,151.10, 984,103.91 and 390,838.33

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Solution

The fourth proportional to 713,151.10, 984,103.91 and 390,838.33 is: 539,332.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,151.10 : 984,103.91 = 390,838.33 : x
  2. Step 2: Convert to fraction form
    713,151.10/984,103.91 = 390,838.33/x
  3. Step 3: Cross multiply
    713,151.10x = 984,103.91 × 390,838.33
  4. Step 4: Simplify right side
    713,151.10x = 384,625,523,810.35
  5. Step 5: Solve for x
    x = 384,625,523,810.35/713,151.10
  6. Step 6: Final answer
    x = 539,332.45

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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.