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Finding the Fourth Proportional to 580,400.70, 870,601.05 and 438,683.10

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Solution

The fourth proportional to 580,400.70, 870,601.05 and 438,683.10 is: 658,024.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,400.70 : 870,601.05 = 438,683.10 : x
  2. Step 2: Convert to fraction form
    580,400.70/870,601.05 = 438,683.10/x
  3. Step 3: Cross multiply
    580,400.70x = 870,601.05 × 438,683.10
  4. Step 4: Simplify right side
    580,400.70x = 381,917,967,477.26
  5. Step 5: Solve for x
    x = 381,917,967,477.26/580,400.70
  6. Step 6: Final answer
    x = 658,024.65

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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.