Home / 836,827.18-1,155,377.63-642,889.46

Finding the Fourth Proportional to 836,827.18, 1,155,377.63 and 642,889.46

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Solution

The fourth proportional to 836,827.18, 1,155,377.63 and 642,889.46 is: 887,614.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,827.18 : 1,155,377.63 = 642,889.46 : x
  2. Step 2: Convert to fraction form
    836,827.18/1,155,377.63 = 642,889.46/x
  3. Step 3: Cross multiply
    836,827.18x = 1,155,377.63 × 642,889.46
  4. Step 4: Simplify right side
    836,827.18x = 742,780,100,646.78
  5. Step 5: Solve for x
    x = 742,780,100,646.78/836,827.18
  6. Step 6: Final answer
    x = 887,614.69

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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.