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Finding the Fourth Proportional to 666,654.95, 919,115.27 and 424,849.29

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Solution

The fourth proportional to 666,654.95, 919,115.27 and 424,849.29 is: 585,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,654.95 : 919,115.27 = 424,849.29 : x
  2. Step 2: Convert to fraction form
    666,654.95/919,115.27 = 424,849.29/x
  3. Step 3: Cross multiply
    666,654.95x = 919,115.27 × 424,849.29
  4. Step 4: Simplify right side
    666,654.95x = 390,485,474,396.46
  5. Step 5: Solve for x
    x = 390,485,474,396.46/666,654.95
  6. Step 6: Final answer
    x = 585,738.51

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1.5x scale

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.