Home / 431,356,780.80-647,035,171.20-286,237,958.40

Finding the Fourth Proportional to 431,356,780.80, 647,035,171.20 and 286,237,958.40

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Solution

The fourth proportional to 431,356,780.80, 647,035,171.20 and 286,237,958.40 is: 429,356,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,356,780.80 : 647,035,171.20 = 286,237,958.40 : x
  2. Step 2: Convert to fraction form
    431,356,780.80/647,035,171.20 = 286,237,958.40/x
  3. Step 3: Cross multiply
    431,356,780.80x = 647,035,171.20 × 286,237,958.40
  4. Step 4: Simplify right side
    431,356,780.80x = 185,206,026,417,282,464
  5. Step 5: Solve for x
    x = 185,206,026,417,282,464/431,356,780.80
  6. Step 6: Final answer
    x = 429,356,937.60

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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.