Home / 836,800.43-1,155,340.70-642,862.71

Finding the Fourth Proportional to 836,800.43, 1,155,340.70 and 642,862.71

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Solution

The fourth proportional to 836,800.43, 1,155,340.70 and 642,862.71 is: 887,577.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,800.43 : 1,155,340.70 = 642,862.71 : x
  2. Step 2: Convert to fraction form
    836,800.43/1,155,340.70 = 642,862.71/x
  3. Step 3: Cross multiply
    836,800.43x = 1,155,340.70 × 642,862.71
  4. Step 4: Simplify right side
    836,800.43x = 742,725,450,160.98
  5. Step 5: Solve for x
    x = 742,725,450,160.98/836,800.43
  6. Step 6: Final answer
    x = 887,577.76

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Double scale
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1.5x scale

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.