Home / 511,248,468.20-766,872,702.30-429,619,130.60

Finding the Fourth Proportional to 511,248,468.20, 766,872,702.30 and 429,619,130.60

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Solution

The fourth proportional to 511,248,468.20, 766,872,702.30 and 429,619,130.60 is: 644,428,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,248,468.20 : 766,872,702.30 = 429,619,130.60 : x
  2. Step 2: Convert to fraction form
    511,248,468.20/766,872,702.30 = 429,619,130.60/x
  3. Step 3: Cross multiply
    511,248,468.20x = 766,872,702.30 × 429,619,130.60
  4. Step 4: Simplify right side
    511,248,468.20x = 329,463,183,642,998,592
  5. Step 5: Solve for x
    x = 329,463,183,642,998,592/511,248,468.20
  6. Step 6: Final answer
    x = 644,428,695.90

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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.