Home / 939,720.90-1,296,144.96-862,445.46

Finding the Fourth Proportional to 939,720.90, 1,296,144.96 and 862,445.46

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Solution

The fourth proportional to 939,720.90, 1,296,144.96 and 862,445.46 is: 1,189,559.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,720.90 : 1,296,144.96 = 862,445.46 : x
  2. Step 2: Convert to fraction form
    939,720.90/1,296,144.96 = 862,445.46/x
  3. Step 3: Cross multiply
    939,720.90x = 1,296,144.96 × 862,445.46
  4. Step 4: Simplify right side
    939,720.90x = 1,117,854,336,253.88
  5. Step 5: Solve for x
    x = 1,117,854,336,253.88/939,720.90
  6. Step 6: Final answer
    x = 1,189,559.94

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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.