Home / 687,400.79-1,031,089.83-282,510.95

Finding the Fourth Proportional to 687,400.79, 1,031,089.83 and 282,510.95

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Solution

The fourth proportional to 687,400.79, 1,031,089.83 and 282,510.95 is: 423,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,400.79 : 1,031,089.83 = 282,510.95 : x
  2. Step 2: Convert to fraction form
    687,400.79/1,031,089.83 = 282,510.95/x
  3. Step 3: Cross multiply
    687,400.79x = 1,031,089.83 × 282,510.95
  4. Step 4: Simplify right side
    687,400.79x = 291,294,162,253.19
  5. Step 5: Solve for x
    x = 291,294,162,253.19/687,400.79
  6. Step 6: Final answer
    x = 423,761.75

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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.