Home / 687,483.64-1,031,275.14-287,722.18

Finding the Fourth Proportional to 687,483.64, 1,031,275.14 and 287,722.18

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Solution

The fourth proportional to 687,483.64, 1,031,275.14 and 287,722.18 is: 431,604.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,483.64 : 1,031,275.14 = 287,722.18 : x
  2. Step 2: Convert to fraction form
    687,483.64/1,031,275.14 = 287,722.18/x
  3. Step 3: Cross multiply
    687,483.64x = 1,031,275.14 × 287,722.18
  4. Step 4: Simplify right side
    687,483.64x = 296,720,731,460.61
  5. Step 5: Solve for x
    x = 296,720,731,460.61/687,483.64
  6. Step 6: Final answer
    x = 431,604.06

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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.