Home / 431,569,400.85-647,354,101.28-247,147,564.05

Finding the Fourth Proportional to 431,569,400.85, 647,354,101.28 and 247,147,564.05

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Solution

The fourth proportional to 431,569,400.85, 647,354,101.28 and 247,147,564.05 is: 370,721,346.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,400.85 : 647,354,101.28 = 247,147,564.05 : x
  2. Step 2: Convert to fraction form
    431,569,400.85/647,354,101.28 = 247,147,564.05/x
  3. Step 3: Cross multiply
    431,569,400.85x = 647,354,101.28 × 247,147,564.05
  4. Step 4: Simplify right side
    431,569,400.85x = 159,991,989,207,893,248
  5. Step 5: Solve for x
    x = 159,991,989,207,893,248/431,569,400.85
  6. Step 6: Final answer
    x = 370,721,346.08

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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.