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Finding the Fourth Proportional to 665,153.10, 997,729.65 and 610,040.70

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Solution

The fourth proportional to 665,153.10, 997,729.65 and 610,040.70 is: 915,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,153.10 : 997,729.65 = 610,040.70 : x
  2. Step 2: Convert to fraction form
    665,153.10/997,729.65 = 610,040.70/x
  3. Step 3: Cross multiply
    665,153.10x = 997,729.65 × 610,040.70
  4. Step 4: Simplify right side
    665,153.10x = 608,655,694,096.76
  5. Step 5: Solve for x
    x = 608,655,694,096.76/665,153.10
  6. Step 6: Final answer
    x = 915,061.05

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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.