Home / 624,619.12-861,977.16-338,139.20

Finding the Fourth Proportional to 624,619.12, 861,977.16 and 338,139.20

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Solution

The fourth proportional to 624,619.12, 861,977.16 and 338,139.20 is: 466,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,619.12 : 861,977.16 = 338,139.20 : x
  2. Step 2: Convert to fraction form
    624,619.12/861,977.16 = 338,139.20/x
  3. Step 3: Cross multiply
    624,619.12x = 861,977.16 × 338,139.20
  4. Step 4: Simplify right side
    624,619.12x = 291,468,267,300.67
  5. Step 5: Solve for x
    x = 291,468,267,300.67/624,619.12
  6. Step 6: Final answer
    x = 466,633.60

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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.