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Finding the Fourth Proportional to 495,608.32, 683,937.60 and 280,747.52

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Solution

The fourth proportional to 495,608.32, 683,937.60 and 280,747.52 is: 387,430.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,608.32 : 683,937.60 = 280,747.52 : x
  2. Step 2: Convert to fraction form
    495,608.32/683,937.60 = 280,747.52/x
  3. Step 3: Cross multiply
    495,608.32x = 683,937.60 × 280,747.52
  4. Step 4: Simplify right side
    495,608.32x = 192,013,785,034.75
  5. Step 5: Solve for x
    x = 192,013,785,034.75/495,608.32
  6. Step 6: Final answer
    x = 387,430.51

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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.