Home / 763,650.40-1,145,475.60-427,727.20

Finding the Fourth Proportional to 763,650.40, 1,145,475.60 and 427,727.20

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Solution

The fourth proportional to 763,650.40, 1,145,475.60 and 427,727.20 is: 641,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,650.40 : 1,145,475.60 = 427,727.20 : x
  2. Step 2: Convert to fraction form
    763,650.40/1,145,475.60 = 427,727.20/x
  3. Step 3: Cross multiply
    763,650.40x = 1,145,475.60 × 427,727.20
  4. Step 4: Simplify right side
    763,650.40x = 489,951,071,056.32
  5. Step 5: Solve for x
    x = 489,951,071,056.32/763,650.40
  6. Step 6: Final answer
    x = 641,590.80

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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.