Home / 639,190.12-959,151.52-260,040.88

Finding the Fourth Proportional to 639,190.12, 959,151.52 and 260,040.88

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Solution

The fourth proportional to 639,190.12, 959,151.52 and 260,040.88 is: 390,210.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,190.12 : 959,151.52 = 260,040.88 : x
  2. Step 2: Convert to fraction form
    639,190.12/959,151.52 = 260,040.88/x
  3. Step 3: Cross multiply
    639,190.12x = 959,151.52 × 260,040.88
  4. Step 4: Simplify right side
    639,190.12x = 249,418,605,314.14
  5. Step 5: Solve for x
    x = 249,418,605,314.14/639,190.12
  6. Step 6: Final answer
    x = 390,210.36

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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.