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Finding the Fourth Proportional to 658,720.75, 909,022.83 and 372,234.69

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Solution

The fourth proportional to 658,720.75, 909,022.83 and 372,234.69 is: 513,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,720.75 : 909,022.83 = 372,234.69 : x
  2. Step 2: Convert to fraction form
    658,720.75/909,022.83 = 372,234.69/x
  3. Step 3: Cross multiply
    658,720.75x = 909,022.83 × 372,234.69
  4. Step 4: Simplify right side
    658,720.75x = 338,369,831,327.97
  5. Step 5: Solve for x
    x = 338,369,831,327.97/658,720.75
  6. Step 6: Final answer
    x = 513,677.20

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Double scale
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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.