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Finding the Fourth Proportional to 591,997.80, 887,267.70 and 402,457.80

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Solution

The fourth proportional to 591,997.80, 887,267.70 and 402,457.80 is: 603,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,997.80 : 887,267.70 = 402,457.80 : x
  2. Step 2: Convert to fraction form
    591,997.80/887,267.70 = 402,457.80/x
  3. Step 3: Cross multiply
    591,997.80x = 887,267.70 × 402,457.80
  4. Step 4: Simplify right side
    591,997.80x = 357,087,806,553.06
  5. Step 5: Solve for x
    x = 357,087,806,553.06/591,997.80
  6. Step 6: Final answer
    x = 603,191.10

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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.