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Finding the Fourth Proportional to 887,326.40, 1,330,989.60 and 296,350.40

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Solution

The fourth proportional to 887,326.40, 1,330,989.60 and 296,350.40 is: 444,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,326.40 : 1,330,989.60 = 296,350.40 : x
  2. Step 2: Convert to fraction form
    887,326.40/1,330,989.60 = 296,350.40/x
  3. Step 3: Cross multiply
    887,326.40x = 1,330,989.60 × 296,350.40
  4. Step 4: Simplify right side
    887,326.40x = 394,439,300,355.84
  5. Step 5: Solve for x
    x = 394,439,300,355.84/887,326.40
  6. Step 6: Final answer
    x = 444,525.60

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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.