Home / 858,935.28-1,288,140.40-409,419.28

Finding the Fourth Proportional to 858,935.28, 1,288,140.40 and 409,419.28

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Solution

The fourth proportional to 858,935.28, 1,288,140.40 and 409,419.28 is: 614,003.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,935.28 : 1,288,140.40 = 409,419.28 : x
  2. Step 2: Convert to fraction form
    858,935.28/1,288,140.40 = 409,419.28/x
  3. Step 3: Cross multiply
    858,935.28x = 1,288,140.40 × 409,419.28
  4. Step 4: Simplify right side
    858,935.28x = 527,389,515,106.91
  5. Step 5: Solve for x
    x = 527,389,515,106.91/858,935.28
  6. Step 6: Final answer
    x = 614,003.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.