Home / 836,827.91-1,155,378.62-642,890.21

Finding the Fourth Proportional to 836,827.91, 1,155,378.62 and 642,890.21

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Solution

The fourth proportional to 836,827.91, 1,155,378.62 and 642,890.21 is: 887,615.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,827.91 : 1,155,378.62 = 642,890.21 : x
  2. Step 2: Convert to fraction form
    836,827.91/1,155,378.62 = 642,890.21/x
  3. Step 3: Cross multiply
    836,827.91x = 1,155,378.62 × 642,890.21
  4. Step 4: Simplify right side
    836,827.91x = 742,781,600,426.86
  5. Step 5: Solve for x
    x = 742,781,600,426.86/836,827.91
  6. Step 6: Final answer
    x = 887,615.72

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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.