Home / 836,799.30-1,155,339.14-642,861.59

Finding the Fourth Proportional to 836,799.30, 1,155,339.14 and 642,861.59

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Solution

The fourth proportional to 836,799.30, 1,155,339.14 and 642,861.59 is: 887,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,799.30 : 1,155,339.14 = 642,861.59 : x
  2. Step 2: Convert to fraction form
    836,799.30/1,155,339.14 = 642,861.59/x
  3. Step 3: Cross multiply
    836,799.30x = 1,155,339.14 × 642,861.59
  4. Step 4: Simplify right side
    836,799.30x = 742,723,147,538.63
  5. Step 5: Solve for x
    x = 742,723,147,538.63/836,799.30
  6. Step 6: Final answer
    x = 887,576.21

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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.