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Finding the Fourth Proportional to 656,397.95, 905,816.62 and 369,912.29

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Solution

The fourth proportional to 656,397.95, 905,816.62 and 369,912.29 is: 510,471.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,397.95 : 905,816.62 = 369,912.29 : x
  2. Step 2: Convert to fraction form
    656,397.95/905,816.62 = 369,912.29/x
  3. Step 3: Cross multiply
    656,397.95x = 905,816.62 × 369,912.29
  4. Step 4: Simplify right side
    656,397.95x = 335,072,700,224.26
  5. Step 5: Solve for x
    x = 335,072,700,224.26/656,397.95
  6. Step 6: Final answer
    x = 510,471.89

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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.