Home / 724,961.12-1,087,890.75-421,498.10

Finding the Fourth Proportional to 724,961.12, 1,087,890.75 and 421,498.10

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Solution

The fourth proportional to 724,961.12, 1,087,890.75 and 421,498.10 is: 632,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,961.12 : 1,087,890.75 = 421,498.10 : x
  2. Step 2: Convert to fraction form
    724,961.12/1,087,890.75 = 421,498.10/x
  3. Step 3: Cross multiply
    724,961.12x = 1,087,890.75 × 421,498.10
  4. Step 4: Simplify right side
    724,961.12x = 458,543,884,132.58
  5. Step 5: Solve for x
    x = 458,543,884,132.58/724,961.12
  6. Step 6: Final answer
    x = 632,508.24

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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.