Home / 639,186.12-959,145.51-260,036.87

Finding the Fourth Proportional to 639,186.12, 959,145.51 and 260,036.87

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Solution

The fourth proportional to 639,186.12, 959,145.51 and 260,036.87 is: 390,204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,186.12 : 959,145.51 = 260,036.87 : x
  2. Step 2: Convert to fraction form
    639,186.12/959,145.51 = 260,036.87/x
  3. Step 3: Cross multiply
    639,186.12x = 959,145.51 × 260,036.87
  4. Step 4: Simplify right side
    639,186.12x = 249,413,191,499.23
  5. Step 5: Solve for x
    x = 249,413,191,499.23/639,186.12
  6. Step 6: Final answer
    x = 390,204.33

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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.