Home / 765,849.13-1,056,862.89-421,677.90

Finding the Fourth Proportional to 765,849.13, 1,056,862.89 and 421,677.90

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Solution

The fourth proportional to 765,849.13, 1,056,862.89 and 421,677.90 is: 581,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,849.13 : 1,056,862.89 = 421,677.90 : x
  2. Step 2: Convert to fraction form
    765,849.13/1,056,862.89 = 421,677.90/x
  3. Step 3: Cross multiply
    765,849.13x = 1,056,862.89 × 421,677.90
  4. Step 4: Simplify right side
    765,849.13x = 445,655,724,043.13
  5. Step 5: Solve for x
    x = 445,655,724,043.13/765,849.13
  6. Step 6: Final answer
    x = 581,910.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.