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Finding the Fourth Proportional to 717,361.65, 989,947.14 and 395,101.74

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Solution

The fourth proportional to 717,361.65, 989,947.14 and 395,101.74 is: 545,233.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,361.65 : 989,947.14 = 395,101.74 : x
  2. Step 2: Convert to fraction form
    717,361.65/989,947.14 = 395,101.74/x
  3. Step 3: Cross multiply
    717,361.65x = 989,947.14 × 395,101.74
  4. Step 4: Simplify right side
    717,361.65x = 391,129,837,522.02
  5. Step 5: Solve for x
    x = 391,129,837,522.02/717,361.65
  6. Step 6: Final answer
    x = 545,233.83

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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.