Home / 431,569,308.60-647,353,962.90-247,147,471.80

Finding the Fourth Proportional to 431,569,308.60, 647,353,962.90 and 247,147,471.80

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Solution

The fourth proportional to 431,569,308.60, 647,353,962.90 and 247,147,471.80 is: 370,721,207.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,308.60 : 647,353,962.90 = 247,147,471.80 : x
  2. Step 2: Convert to fraction form
    431,569,308.60/647,353,962.90 = 247,147,471.80/x
  3. Step 3: Cross multiply
    431,569,308.60x = 647,353,962.90 × 247,147,471.80
  4. Step 4: Simplify right side
    431,569,308.60x = 159,991,895,290,445,984
  5. Step 5: Solve for x
    x = 159,991,895,290,445,984/431,569,308.60
  6. Step 6: Final answer
    x = 370,721,207.70

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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.