Home / 836,829.90-1,155,381.38-642,892.22

Finding the Fourth Proportional to 836,829.90, 1,155,381.38 and 642,892.22

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Solution

The fourth proportional to 836,829.90, 1,155,381.38 and 642,892.22 is: 887,618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,829.90 : 1,155,381.38 = 642,892.22 : x
  2. Step 2: Convert to fraction form
    836,829.90/1,155,381.38 = 642,892.22/x
  3. Step 3: Cross multiply
    836,829.90x = 1,155,381.38 × 642,892.22
  4. Step 4: Simplify right side
    836,829.90x = 742,785,700,334.86
  5. Step 5: Solve for x
    x = 742,785,700,334.86/836,829.90
  6. Step 6: Final answer
    x = 887,618.50

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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.