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Finding the Fourth Proportional to 506,893.80, 699,440.22 and 280,538.76

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Solution

The fourth proportional to 506,893.80, 699,440.22 and 280,538.76 is: 387,102.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,893.80 : 699,440.22 = 280,538.76 : x
  2. Step 2: Convert to fraction form
    506,893.80/699,440.22 = 280,538.76/x
  3. Step 3: Cross multiply
    506,893.80x = 699,440.22 × 280,538.76
  4. Step 4: Simplify right side
    506,893.80x = 196,220,092,012.93
  5. Step 5: Solve for x
    x = 196,220,092,012.93/506,893.80
  6. Step 6: Final answer
    x = 387,102.96

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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.