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Finding the Fourth Proportional to 717,901.29, 990,710.33 and 395,622.95

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Solution

The fourth proportional to 717,901.29, 990,710.33 and 395,622.95 is: 545,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,901.29 : 990,710.33 = 395,622.95 : x
  2. Step 2: Convert to fraction form
    717,901.29/990,710.33 = 395,622.95/x
  3. Step 3: Cross multiply
    717,901.29x = 990,710.33 × 395,622.95
  4. Step 4: Simplify right side
    717,901.29x = 391,947,736,418.41
  5. Step 5: Solve for x
    x = 391,947,736,418.41/717,901.29
  6. Step 6: Final answer
    x = 545,963.27

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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.