Home / 729,712,435.77-1,006,990,715.31-395,182,239.96

Finding the Fourth Proportional to 729,712,435.77, 1,006,990,715.31 and 395,182,239.96

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Solution

The fourth proportional to 729,712,435.77, 1,006,990,715.31 and 395,182,239.96 is: 545,344,750.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,712,435.77 : 1,006,990,715.31 = 395,182,239.96 : x
  2. Step 2: Convert to fraction form
    729,712,435.77/1,006,990,715.31 = 395,182,239.96/x
  3. Step 3: Cross multiply
    729,712,435.77x = 1,006,990,715.31 × 395,182,239.96
  4. Step 4: Simplify right side
    729,712,435.77x = 397,944,846,495,128,448
  5. Step 5: Solve for x
    x = 397,944,846,495,128,448/729,712,435.77
  6. Step 6: Final answer
    x = 545,344,750.87

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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.