Home / 836,832.90-1,155,385.52-642,895.21

Finding the Fourth Proportional to 836,832.90, 1,155,385.52 and 642,895.21

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Solution

The fourth proportional to 836,832.90, 1,155,385.52 and 642,895.21 is: 887,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,832.90 : 1,155,385.52 = 642,895.21 : x
  2. Step 2: Convert to fraction form
    836,832.90/1,155,385.52 = 642,895.21/x
  3. Step 3: Cross multiply
    836,832.90x = 1,155,385.52 × 642,895.21
  4. Step 4: Simplify right side
    836,832.90x = 742,791,816,511.36
  5. Step 5: Solve for x
    x = 742,791,816,511.36/836,832.90
  6. Step 6: Final answer
    x = 887,622.63

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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.