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Finding the Fourth Proportional to 890,381.68, 1,337,328.64 and 765,045.52

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Solution

The fourth proportional to 890,381.68, 1,337,328.64 and 765,045.52 is: 1,149,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,381.68 : 1,337,328.64 = 765,045.52 : x
  2. Step 2: Convert to fraction form
    890,381.68/1,337,328.64 = 765,045.52/x
  3. Step 3: Cross multiply
    890,381.68x = 1,337,328.64 × 765,045.52
  4. Step 4: Simplify right side
    890,381.68x = 1,023,117,284,799.69
  5. Step 5: Solve for x
    x = 1,023,117,284,799.69/890,381.68
  6. Step 6: Final answer
    x = 1,149,077.20

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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.