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Finding the Fourth Proportional to 665,901.50, 919,034.10 and 375,572.72

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Solution

The fourth proportional to 665,901.50, 919,034.10 and 375,572.72 is: 518,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,901.50 : 919,034.10 = 375,572.72 : x
  2. Step 2: Convert to fraction form
    665,901.50/919,034.10 = 375,572.72/x
  3. Step 3: Cross multiply
    665,901.50x = 919,034.10 × 375,572.72
  4. Step 4: Simplify right side
    665,901.50x = 345,164,136,709.75
  5. Step 5: Solve for x
    x = 345,164,136,709.75/665,901.50
  6. Step 6: Final answer
    x = 518,341.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.