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Finding the Fourth Proportional to 522,060.80, 783,091.20 and 256,340.30

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Solution

The fourth proportional to 522,060.80, 783,091.20 and 256,340.30 is: 384,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,060.80 : 783,091.20 = 256,340.30 : x
  2. Step 2: Convert to fraction form
    522,060.80/783,091.20 = 256,340.30/x
  3. Step 3: Cross multiply
    522,060.80x = 783,091.20 × 256,340.30
  4. Step 4: Simplify right side
    522,060.80x = 200,737,833,135.36
  5. Step 5: Solve for x
    x = 200,737,833,135.36/522,060.80
  6. Step 6: Final answer
    x = 384,510.45

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Double scale
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Similar ratio
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1.5x scale

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.