Home / 753,892.80-1,040,380.10-409,728.72

Finding the Fourth Proportional to 753,892.80, 1,040,380.10 and 409,728.72

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Solution

The fourth proportional to 753,892.80, 1,040,380.10 and 409,728.72 is: 565,430.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,892.80 : 1,040,380.10 = 409,728.72 : x
  2. Step 2: Convert to fraction form
    753,892.80/1,040,380.10 = 409,728.72/x
  3. Step 3: Cross multiply
    753,892.80x = 1,040,380.10 × 409,728.72
  4. Step 4: Simplify right side
    753,892.80x = 426,273,606,686.47
  5. Step 5: Solve for x
    x = 426,273,606,686.47/753,892.80
  6. Step 6: Final answer
    x = 565,430.00

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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.