Home / 816,729,139.70-1,225,572,006.45-299,211,893.90

Finding the Fourth Proportional to 816,729,139.70, 1,225,572,006.45 and 299,211,893.90

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Solution

The fourth proportional to 816,729,139.70, 1,225,572,006.45 and 299,211,893.90 is: 448,993,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,729,139.70 : 1,225,572,006.45 = 299,211,893.90 : x
  2. Step 2: Convert to fraction form
    816,729,139.70/1,225,572,006.45 = 299,211,893.90/x
  3. Step 3: Cross multiply
    816,729,139.70x = 1,225,572,006.45 × 299,211,893.90
  4. Step 4: Simplify right side
    816,729,139.70x = 366,705,721,160,727,488
  5. Step 5: Solve for x
    x = 366,705,721,160,727,488/816,729,139.70
  6. Step 6: Final answer
    x = 448,993,066.78

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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.