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Finding the Fourth Proportional to 662,407.20, 993,664.80 and 283,330.80

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Solution

The fourth proportional to 662,407.20, 993,664.80 and 283,330.80 is: 425,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,407.20 : 993,664.80 = 283,330.80 : x
  2. Step 2: Convert to fraction form
    662,407.20/993,664.80 = 283,330.80/x
  3. Step 3: Cross multiply
    662,407.20x = 993,664.80 × 283,330.80
  4. Step 4: Simplify right side
    662,407.20x = 281,535,842,715.84
  5. Step 5: Solve for x
    x = 281,535,842,715.84/662,407.20
  6. Step 6: Final answer
    x = 425,019.30

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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.