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Finding the Fourth Proportional to 611,924,800.20, 917,887,200.30 and 490,992,448.20

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Solution

The fourth proportional to 611,924,800.20, 917,887,200.30 and 490,992,448.20 is: 736,488,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,924,800.20 : 917,887,200.30 = 490,992,448.20 : x
  2. Step 2: Convert to fraction form
    611,924,800.20/917,887,200.30 = 490,992,448.20/x
  3. Step 3: Cross multiply
    611,924,800.20x = 917,887,200.30 × 490,992,448.20
  4. Step 4: Simplify right side
    611,924,800.20x = 450,675,683,646,740,736
  5. Step 5: Solve for x
    x = 450,675,683,646,740,736/611,924,800.20
  6. Step 6: Final answer
    x = 736,488,672.30

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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.