Home / 687,124.91-1,031,089.23-287,732.27

Finding the Fourth Proportional to 687,124.91, 1,031,089.23 and 287,732.27

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Solution

The fourth proportional to 687,124.91, 1,031,089.23 and 287,732.27 is: 431,766.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,124.91 : 1,031,089.23 = 287,732.27 : x
  2. Step 2: Convert to fraction form
    687,124.91/1,031,089.23 = 287,732.27/x
  3. Step 3: Cross multiply
    687,124.91x = 1,031,089.23 × 287,732.27
  4. Step 4: Simplify right side
    687,124.91x = 296,677,647,298.18
  5. Step 5: Solve for x
    x = 296,677,647,298.18/687,124.91
  6. Step 6: Final answer
    x = 431,766.69

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1.5x scale

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.