Home / 497,072.12-686,021.30-282,281.20

Finding the Fourth Proportional to 497,072.12, 686,021.30 and 282,281.20

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Solution

The fourth proportional to 497,072.12, 686,021.30 and 282,281.20 is: 389,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,072.12 : 686,021.30 = 282,281.20 : x
  2. Step 2: Convert to fraction form
    497,072.12/686,021.30 = 282,281.20/x
  3. Step 3: Cross multiply
    497,072.12x = 686,021.30 × 282,281.20
  4. Step 4: Simplify right side
    497,072.12x = 193,650,915,789.56
  5. Step 5: Solve for x
    x = 193,650,915,789.56/497,072.12
  6. Step 6: Final answer
    x = 389,583.14

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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.