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Finding the Fourth Proportional to 717,323.72, 989,909.70 and 411,411.92

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Solution

The fourth proportional to 717,323.72, 989,909.70 and 411,411.92 is: 567,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,323.72 : 989,909.70 = 411,411.92 : x
  2. Step 2: Convert to fraction form
    717,323.72/989,909.70 = 411,411.92/x
  3. Step 3: Cross multiply
    717,323.72x = 989,909.70 × 411,411.92
  4. Step 4: Simplify right side
    717,323.72x = 407,260,650,303.62
  5. Step 5: Solve for x
    x = 407,260,650,303.62/717,323.72
  6. Step 6: Final answer
    x = 567,750.15

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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.