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Finding the Fourth Proportional to 580,442.56, 870,999.98 and 243,453.20

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Solution

The fourth proportional to 580,442.56, 870,999.98 and 243,453.20 is: 365,320.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,442.56 : 870,999.98 = 243,453.20 : x
  2. Step 2: Convert to fraction form
    580,442.56/870,999.98 = 243,453.20/x
  3. Step 3: Cross multiply
    580,442.56x = 870,999.98 × 243,453.20
  4. Step 4: Simplify right side
    580,442.56x = 212,047,732,330.94
  5. Step 5: Solve for x
    x = 212,047,732,330.94/580,442.56
  6. Step 6: Final answer
    x = 365,320.79

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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.