Home / 687,464.64-1,031,246.28-287,703

Finding the Fourth Proportional to 687,464.64, 1,031,246.28 and 287,703

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Solution

The fourth proportional to 687,464.64, 1,031,246.28 and 287,703 is: 431,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,464.64 : 1,031,246.28 = 287,703 : x
  2. Step 2: Convert to fraction form
    687,464.64/1,031,246.28 = 287,703/x
  3. Step 3: Cross multiply
    687,464.64x = 1,031,246.28 × 287,703
  4. Step 4: Simplify right side
    687,464.64x = 296,692,648,494.84
  5. Step 5: Solve for x
    x = 296,692,648,494.84/687,464.64
  6. Step 6: Final answer
    x = 431,575.14

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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.