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Finding the Fourth Proportional to 717,992.83, 990,830.10 and 395,702.92

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Solution

The fourth proportional to 717,992.83, 990,830.10 and 395,702.92 is: 546,070.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,992.83 : 990,830.10 = 395,702.92 : x
  2. Step 2: Convert to fraction form
    717,992.83/990,830.10 = 395,702.92/x
  3. Step 3: Cross multiply
    717,992.83x = 990,830.10 × 395,702.92
  4. Step 4: Simplify right side
    717,992.83x = 392,074,363,793.89
  5. Step 5: Solve for x
    x = 392,074,363,793.89/717,992.83
  6. Step 6: Final answer
    x = 546,070.03

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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.