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Finding the Fourth Proportional to 580,025.70, 870,038.55 and 540,659.70

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Solution

The fourth proportional to 580,025.70, 870,038.55 and 540,659.70 is: 810,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,025.70 : 870,038.55 = 540,659.70 : x
  2. Step 2: Convert to fraction form
    580,025.70/870,038.55 = 540,659.70/x
  3. Step 3: Cross multiply
    580,025.70x = 870,038.55 × 540,659.70
  4. Step 4: Simplify right side
    580,025.70x = 470,394,781,431.44
  5. Step 5: Solve for x
    x = 470,394,781,431.44/580,025.70
  6. Step 6: Final answer
    x = 810,989.55

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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.