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Finding the Fourth Proportional to 717,463.71, 990,169.90 and 535,860.49

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Solution

The fourth proportional to 717,463.71, 990,169.90 and 535,860.49 is: 739,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,463.71 : 990,169.90 = 535,860.49 : x
  2. Step 2: Convert to fraction form
    717,463.71/990,169.90 = 535,860.49/x
  3. Step 3: Cross multiply
    717,463.71x = 990,169.90 × 535,860.49
  4. Step 4: Simplify right side
    717,463.71x = 530,592,927,797.25
  5. Step 5: Solve for x
    x = 530,592,927,797.25/717,463.71
  6. Step 6: Final answer
    x = 739,539.74

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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.