Home / 639,205.38-958,246.43-260,444.61

Finding the Fourth Proportional to 639,205.38, 958,246.43 and 260,444.61

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Solution

The fourth proportional to 639,205.38, 958,246.43 and 260,444.61 is: 390,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,205.38 : 958,246.43 = 260,444.61 : x
  2. Step 2: Convert to fraction form
    639,205.38/958,246.43 = 260,444.61/x
  3. Step 3: Cross multiply
    639,205.38x = 958,246.43 × 260,444.61
  4. Step 4: Simplify right side
    639,205.38x = 249,570,116,443.02
  5. Step 5: Solve for x
    x = 249,570,116,443.02/639,205.38
  6. Step 6: Final answer
    x = 390,438.07

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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.