Home / 431,569,291.60-647,353,937.40-392,030,081.20

Finding the Fourth Proportional to 431,569,291.60, 647,353,937.40 and 392,030,081.20

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Solution

The fourth proportional to 431,569,291.60, 647,353,937.40 and 392,030,081.20 is: 588,045,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,291.60 : 647,353,937.40 = 392,030,081.20 : x
  2. Step 2: Convert to fraction form
    431,569,291.60/647,353,937.40 = 392,030,081.20/x
  3. Step 3: Cross multiply
    431,569,291.60x = 647,353,937.40 × 392,030,081.20
  4. Step 4: Simplify right side
    431,569,291.60x = 253,782,216,644,061,696
  5. Step 5: Solve for x
    x = 253,782,216,644,061,696/431,569,291.60
  6. Step 6: Final answer
    x = 588,045,121.80

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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.