Home / 908,107,100.64-1,253,187,750.92-490,419,345.69

Finding the Fourth Proportional to 908,107,100.64, 1,253,187,750.92 and 490,419,345.69

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Solution

The fourth proportional to 908,107,100.64, 1,253,187,750.92 and 490,419,345.69 is: 676,778,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,107,100.64 : 1,253,187,750.92 = 490,419,345.69 : x
  2. Step 2: Convert to fraction form
    908,107,100.64/1,253,187,750.92 = 490,419,345.69/x
  3. Step 3: Cross multiply
    908,107,100.64x = 1,253,187,750.92 × 490,419,345.69
  4. Step 4: Simplify right side
    908,107,100.64x = 614,587,516,830,456,960
  5. Step 5: Solve for x
    x = 614,587,516,830,456,960/908,107,100.64
  6. Step 6: Final answer
    x = 676,778,671.15

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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.