Home / 431,356,002.80-647,034,004.20-354,765,513.20

Finding the Fourth Proportional to 431,356,002.80, 647,034,004.20 and 354,765,513.20

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Solution

The fourth proportional to 431,356,002.80, 647,034,004.20 and 354,765,513.20 is: 532,148,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,356,002.80 : 647,034,004.20 = 354,765,513.20 : x
  2. Step 2: Convert to fraction form
    431,356,002.80/647,034,004.20 = 354,765,513.20/x
  3. Step 3: Cross multiply
    431,356,002.80x = 647,034,004.20 × 354,765,513.20
  4. Step 4: Simplify right side
    431,356,002.80x = 229,545,350,557,863,968
  5. Step 5: Solve for x
    x = 229,545,350,557,863,968/431,356,002.80
  6. Step 6: Final answer
    x = 532,148,269.80

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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.