Home / 638,702.89-881,422.73-412,742.05

Finding the Fourth Proportional to 638,702.89, 881,422.73 and 412,742.05

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Solution

The fourth proportional to 638,702.89, 881,422.73 and 412,742.05 is: 569,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,702.89 : 881,422.73 = 412,742.05 : x
  2. Step 2: Convert to fraction form
    638,702.89/881,422.73 = 412,742.05/x
  3. Step 3: Cross multiply
    638,702.89x = 881,422.73 × 412,742.05
  4. Step 4: Simplify right side
    638,702.89x = 363,800,224,496.80
  5. Step 5: Solve for x
    x = 363,800,224,496.80/638,702.89
  6. Step 6: Final answer
    x = 569,592.26

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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.