Home / 901,702.20-1,244,046.96-519,720.78

Finding the Fourth Proportional to 901,702.20, 1,244,046.96 and 519,720.78

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Solution

The fourth proportional to 901,702.20, 1,244,046.96 and 519,720.78 is: 717,040.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,702.20 : 1,244,046.96 = 519,720.78 : x
  2. Step 2: Convert to fraction form
    901,702.20/1,244,046.96 = 519,720.78/x
  3. Step 3: Cross multiply
    901,702.20x = 1,244,046.96 × 519,720.78
  4. Step 4: Simplify right side
    901,702.20x = 646,557,056,407.83
  5. Step 5: Solve for x
    x = 646,557,056,407.83/901,702.20
  6. Step 6: Final answer
    x = 717,040.57

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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.