Home / 639,179.37-959,135.38-260,030.12

Finding the Fourth Proportional to 639,179.37, 959,135.38 and 260,030.12

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Solution

The fourth proportional to 639,179.37, 959,135.38 and 260,030.12 is: 390,194.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,179.37 : 959,135.38 = 260,030.12 : x
  2. Step 2: Convert to fraction form
    639,179.37/959,135.38 = 260,030.12/x
  3. Step 3: Cross multiply
    639,179.37x = 959,135.38 × 260,030.12
  4. Step 4: Simplify right side
    639,179.37x = 249,404,082,511.89
  5. Step 5: Solve for x
    x = 249,404,082,511.89/639,179.37
  6. Step 6: Final answer
    x = 390,194.20

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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.