Home / 765,223.05-1,148,278.13-386,173.43

Finding the Fourth Proportional to 765,223.05, 1,148,278.13 and 386,173.43

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Solution

The fourth proportional to 765,223.05, 1,148,278.13 and 386,173.43 is: 579,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,223.05 : 1,148,278.13 = 386,173.43 : x
  2. Step 2: Convert to fraction form
    765,223.05/1,148,278.13 = 386,173.43/x
  3. Step 3: Cross multiply
    765,223.05x = 1,148,278.13 × 386,173.43
  4. Step 4: Simplify right side
    765,223.05x = 443,434,503,586.17
  5. Step 5: Solve for x
    x = 443,434,503,586.17/765,223.05
  6. Step 6: Final answer
    x = 579,483.98

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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.