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Finding the Fourth Proportional to 662,003.20, 993,004.80 and 396,582.40

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Solution

The fourth proportional to 662,003.20, 993,004.80 and 396,582.40 is: 594,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,003.20 : 993,004.80 = 396,582.40 : x
  2. Step 2: Convert to fraction form
    662,003.20/993,004.80 = 396,582.40/x
  3. Step 3: Cross multiply
    662,003.20x = 993,004.80 × 396,582.40
  4. Step 4: Simplify right side
    662,003.20x = 393,808,226,795.52
  5. Step 5: Solve for x
    x = 393,808,226,795.52/662,003.20
  6. Step 6: Final answer
    x = 594,873.60

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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.