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Finding the Fourth Proportional to 824,494.40, 1,234,322.40 and 615,060.80

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Solution

The fourth proportional to 824,494.40, 1,234,322.40 and 615,060.80 is: 920,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,494.40 : 1,234,322.40 = 615,060.80 : x
  2. Step 2: Convert to fraction form
    824,494.40/1,234,322.40 = 615,060.80/x
  3. Step 3: Cross multiply
    824,494.40x = 1,234,322.40 × 615,060.80
  4. Step 4: Simplify right side
    824,494.40x = 759,183,322,801.92
  5. Step 5: Solve for x
    x = 759,183,322,801.92/824,494.40
  6. Step 6: Final answer
    x = 920,786.51

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Double scale
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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.