Home / 753,904.28-1,040,395.92-409,740.20

Finding the Fourth Proportional to 753,904.28, 1,040,395.92 and 409,740.20

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Solution

The fourth proportional to 753,904.28, 1,040,395.92 and 409,740.20 is: 565,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,904.28 : 1,040,395.92 = 409,740.20 : x
  2. Step 2: Convert to fraction form
    753,904.28/1,040,395.92 = 409,740.20/x
  3. Step 3: Cross multiply
    753,904.28x = 1,040,395.92 × 409,740.20
  4. Step 4: Simplify right side
    753,904.28x = 426,292,032,339.98
  5. Step 5: Solve for x
    x = 426,292,032,339.98/753,904.28
  6. Step 6: Final answer
    x = 565,445.83

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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.