Home / 500,712,952.52-690,892,509.92-288,942,526.31

Finding the Fourth Proportional to 500,712,952.52, 690,892,509.92 and 288,942,526.31

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Solution

The fourth proportional to 500,712,952.52, 690,892,509.92 and 288,942,526.31 is: 398,687,963.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,712,952.52 : 690,892,509.92 = 288,942,526.31 : x
  2. Step 2: Convert to fraction form
    500,712,952.52/690,892,509.92 = 288,942,526.31/x
  3. Step 3: Cross multiply
    500,712,952.52x = 690,892,509.92 × 288,942,526.31
  4. Step 4: Simplify right side
    500,712,952.52x = 199,628,227,220,042,368
  5. Step 5: Solve for x
    x = 199,628,227,220,042,368/500,712,952.52
  6. Step 6: Final answer
    x = 398,687,963.26

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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.