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Finding the Fourth Proportional to 522,091.60, 783,137.40 and 495,134.80

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Solution

The fourth proportional to 522,091.60, 783,137.40 and 495,134.80 is: 742,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,091.60 : 783,137.40 = 495,134.80 : x
  2. Step 2: Convert to fraction form
    522,091.60/783,137.40 = 495,134.80/x
  3. Step 3: Cross multiply
    522,091.60x = 783,137.40 × 495,134.80
  4. Step 4: Simplify right side
    522,091.60x = 387,758,579,921.52
  5. Step 5: Solve for x
    x = 387,758,579,921.52/522,091.60
  6. Step 6: Final answer
    x = 742,702.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.