Home / 680,976.18-939,837.24-439,959.87

Finding the Fourth Proportional to 680,976.18, 939,837.24 and 439,959.87

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Solution

The fourth proportional to 680,976.18, 939,837.24 and 439,959.87 is: 607,202.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,976.18 : 939,837.24 = 439,959.87 : x
  2. Step 2: Convert to fraction form
    680,976.18/939,837.24 = 439,959.87/x
  3. Step 3: Cross multiply
    680,976.18x = 939,837.24 × 439,959.87
  4. Step 4: Simplify right side
    680,976.18x = 413,490,669,931.56
  5. Step 5: Solve for x
    x = 413,490,669,931.56/680,976.18
  6. Step 6: Final answer
    x = 607,202.84

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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.