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Finding the Fourth Proportional to 660,141.98, 988,507.58 and 455,607.76

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Solution

The fourth proportional to 660,141.98, 988,507.58 and 455,607.76 is: 682,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,141.98 : 988,507.58 = 455,607.76 : x
  2. Step 2: Convert to fraction form
    660,141.98/988,507.58 = 455,607.76/x
  3. Step 3: Cross multiply
    660,141.98x = 988,507.58 × 455,607.76
  4. Step 4: Simplify right side
    660,141.98x = 450,371,719,324.28
  5. Step 5: Solve for x
    x = 450,371,719,324.28/660,141.98
  6. Step 6: Final answer
    x = 682,234.63

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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.