Home / 908,078,543.10-1,253,148,378.30-490,390,791.78

Finding the Fourth Proportional to 908,078,543.10, 1,253,148,378.30 and 490,390,791.78

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Solution

The fourth proportional to 908,078,543.10, 1,253,148,378.30 and 490,390,791.78 is: 676,739,286.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,078,543.10 : 1,253,148,378.30 = 490,390,791.78 : x
  2. Step 2: Convert to fraction form
    908,078,543.10/1,253,148,378.30 = 490,390,791.78/x
  3. Step 3: Cross multiply
    908,078,543.10x = 1,253,148,378.30 × 490,390,791.78
  4. Step 4: Simplify right side
    908,078,543.10x = 614,532,425,452,359,936
  5. Step 5: Solve for x
    x = 614,532,425,452,359,936/908,078,543.10
  6. Step 6: Final answer
    x = 676,739,286.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.