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Finding the Fourth Proportional to 452,709,067.80, 679,063,601.70 and 431,185,707.30

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Solution

The fourth proportional to 452,709,067.80, 679,063,601.70 and 431,185,707.30 is: 646,778,560.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,709,067.80 : 679,063,601.70 = 431,185,707.30 : x
  2. Step 2: Convert to fraction form
    452,709,067.80/679,063,601.70 = 431,185,707.30/x
  3. Step 3: Cross multiply
    452,709,067.80x = 679,063,601.70 × 431,185,707.30
  4. Step 4: Simplify right side
    452,709,067.80x = 292,802,519,400,700,032
  5. Step 5: Solve for x
    x = 292,802,519,400,700,032/452,709,067.80
  6. Step 6: Final answer
    x = 646,778,560.95

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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.