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Finding the Fourth Proportional to 898,672.32, 1,240,233.44 and 516,818.88

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Solution

The fourth proportional to 898,672.32, 1,240,233.44 and 516,818.88 is: 713,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,672.32 : 1,240,233.44 = 516,818.88 : x
  2. Step 2: Convert to fraction form
    898,672.32/1,240,233.44 = 516,818.88/x
  3. Step 3: Cross multiply
    898,672.32x = 1,240,233.44 × 516,818.88
  4. Step 4: Simplify right side
    898,672.32x = 640,976,057,399.35
  5. Step 5: Solve for x
    x = 640,976,057,399.35/898,672.32
  6. Step 6: Final answer
    x = 713,247.80

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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.