Home / 729,712,417.77-1,006,990,690.47-395,182,221.95

Finding the Fourth Proportional to 729,712,417.77, 1,006,990,690.47 and 395,182,221.95

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Solution

The fourth proportional to 729,712,417.77, 1,006,990,690.47 and 395,182,221.95 is: 545,344,726.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,712,417.77 : 1,006,990,690.47 = 395,182,221.95 : x
  2. Step 2: Convert to fraction form
    729,712,417.77/1,006,990,690.47 = 395,182,221.95/x
  3. Step 3: Cross multiply
    729,712,417.77x = 1,006,990,690.47 × 395,182,221.95
  4. Step 4: Simplify right side
    729,712,417.77x = 397,944,818,537,864,320
  5. Step 5: Solve for x
    x = 397,944,818,537,864,320/729,712,417.77
  6. Step 6: Final answer
    x = 545,344,726.01

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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.