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Finding the Fourth Proportional to 824,804.40, 1,138,778.40 and 633,475.92

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Solution

The fourth proportional to 824,804.40, 1,138,778.40 and 633,475.92 is: 874,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,804.40 : 1,138,778.40 = 633,475.92 : x
  2. Step 2: Convert to fraction form
    824,804.40/1,138,778.40 = 633,475.92/x
  3. Step 3: Cross multiply
    824,804.40x = 1,138,778.40 × 633,475.92
  4. Step 4: Simplify right side
    824,804.40x = 721,388,694,616.13
  5. Step 5: Solve for x
    x = 721,388,694,616.13/824,804.40
  6. Step 6: Final answer
    x = 874,617.90

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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.