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Finding the Fourth Proportional to 551,168,590.80, 826,752,886.20 and 486,598,509.30

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Solution

The fourth proportional to 551,168,590.80, 826,752,886.20 and 486,598,509.30 is: 729,897,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,168,590.80 : 826,752,886.20 = 486,598,509.30 : x
  2. Step 2: Convert to fraction form
    551,168,590.80/826,752,886.20 = 486,598,509.30/x
  3. Step 3: Cross multiply
    551,168,590.80x = 826,752,886.20 × 486,598,509.30
  4. Step 4: Simplify right side
    551,168,590.80x = 402,296,721,984,392,576
  5. Step 5: Solve for x
    x = 402,296,721,984,392,576/551,168,590.80
  6. Step 6: Final answer
    x = 729,897,763.95

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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.