Home / 729,712,810.80-1,006,991,233.20-395,182,616.40

Finding the Fourth Proportional to 729,712,810.80, 1,006,991,233.20 and 395,182,616.40

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Solution

The fourth proportional to 729,712,810.80, 1,006,991,233.20 and 395,182,616.40 is: 545,345,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,712,810.80 : 1,006,991,233.20 = 395,182,616.40 : x
  2. Step 2: Convert to fraction form
    729,712,810.80/1,006,991,233.20 = 395,182,616.40/x
  3. Step 3: Cross multiply
    729,712,810.80x = 1,006,991,233.20 × 395,182,616.40
  4. Step 4: Simplify right side
    729,712,810.80x = 397,945,430,227,838,528
  5. Step 5: Solve for x
    x = 397,945,430,227,838,528/729,712,810.80
  6. Step 6: Final answer
    x = 545,345,270.55

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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.