Home / 1,253,439,156.83-1,729,761,716.12-688,985,665.20

Finding the Fourth Proportional to 1,253,439,156.83, 1,729,761,716.12 and 688,985,665.20

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Solution

The fourth proportional to 1,253,439,156.83, 1,729,761,716.12 and 688,985,665.20 is: 950,808,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,439,156.83 : 1,729,761,716.12 = 688,985,665.20 : x
  2. Step 2: Convert to fraction form
    1,253,439,156.83/1,729,761,716.12 = 688,985,665.20/x
  3. Step 3: Cross multiply
    1,253,439,156.83x = 1,729,761,716.12 × 688,985,665.20
  4. Step 4: Simplify right side
    1,253,439,156.83x = 1,191,781,026,614,987,008
  5. Step 5: Solve for x
    x = 1,191,781,026,614,987,008/1,253,439,156.83
  6. Step 6: Final answer
    x = 950,808,836.73

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1.5x scale

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.