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Finding the Fourth Proportional to 478,464,346.80, 717,696,520.20 and 294,798,337.20

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Solution

The fourth proportional to 478,464,346.80, 717,696,520.20 and 294,798,337.20 is: 442,197,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,464,346.80 : 717,696,520.20 = 294,798,337.20 : x
  2. Step 2: Convert to fraction form
    478,464,346.80/717,696,520.20 = 294,798,337.20/x
  3. Step 3: Cross multiply
    478,464,346.80x = 717,696,520.20 × 294,798,337.20
  4. Step 4: Simplify right side
    478,464,346.80x = 211,575,740,769,186,208
  5. Step 5: Solve for x
    x = 211,575,740,769,186,208/478,464,346.80
  6. Step 6: Final answer
    x = 442,197,505.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.