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Finding the Fourth Proportional to 679,818.88, 938,161.92 and 373,928.32

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Solution

The fourth proportional to 679,818.88, 938,161.92 and 373,928.32 is: 516,027.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,818.88 : 938,161.92 = 373,928.32 : x
  2. Step 2: Convert to fraction form
    679,818.88/938,161.92 = 373,928.32/x
  3. Step 3: Cross multiply
    679,818.88x = 938,161.92 × 373,928.32
  4. Step 4: Simplify right side
    679,818.88x = 350,805,310,633.57
  5. Step 5: Solve for x
    x = 350,805,310,633.57/679,818.88
  6. Step 6: Final answer
    x = 516,027.61

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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.