Home / 836,803.30-1,155,344.66-642,865.58

Finding the Fourth Proportional to 836,803.30, 1,155,344.66 and 642,865.58

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Solution

The fourth proportional to 836,803.30, 1,155,344.66 and 642,865.58 is: 887,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,803.30 : 1,155,344.66 = 642,865.58 : x
  2. Step 2: Convert to fraction form
    836,803.30/1,155,344.66 = 642,865.58/x
  3. Step 3: Cross multiply
    836,803.30x = 1,155,344.66 × 642,865.58
  4. Step 4: Simplify right side
    836,803.30x = 742,731,314,950.80
  5. Step 5: Solve for x
    x = 742,731,314,950.80/836,803.30
  6. Step 6: Final answer
    x = 887,581.72

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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.