Home / 431,569,406.10-647,354,109.15-247,147,569.30

Finding the Fourth Proportional to 431,569,406.10, 647,354,109.15 and 247,147,569.30

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Solution

The fourth proportional to 431,569,406.10, 647,354,109.15 and 247,147,569.30 is: 370,721,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,406.10 : 647,354,109.15 = 247,147,569.30 : x
  2. Step 2: Convert to fraction form
    431,569,406.10/647,354,109.15 = 247,147,569.30/x
  3. Step 3: Cross multiply
    431,569,406.10x = 647,354,109.15 × 247,147,569.30
  4. Step 4: Simplify right side
    431,569,406.10x = 159,991,994,552,789,376
  5. Step 5: Solve for x
    x = 159,991,994,552,789,376/431,569,406.10
  6. Step 6: Final answer
    x = 370,721,353.95

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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.