Home / 457,169.40-686,531.70-338,974.20

Finding the Fourth Proportional to 457,169.40, 686,531.70 and 338,974.20

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Solution

The fourth proportional to 457,169.40, 686,531.70 and 338,974.20 is: 509,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,169.40 : 686,531.70 = 338,974.20 : x
  2. Step 2: Convert to fraction form
    457,169.40/686,531.70 = 338,974.20/x
  3. Step 3: Cross multiply
    457,169.40x = 686,531.70 × 338,974.20
  4. Step 4: Simplify right side
    457,169.40x = 232,716,533,782.14
  5. Step 5: Solve for x
    x = 232,716,533,782.14/457,169.40
  6. Step 6: Final answer
    x = 509,037.86

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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.