Home / 828,712.59-1,242,568.91-316,411.18

Finding the Fourth Proportional to 828,712.59, 1,242,568.91 and 316,411.18

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Solution

The fourth proportional to 828,712.59, 1,242,568.91 and 316,411.18 is: 474,425.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,712.59 : 1,242,568.91 = 316,411.18 : x
  2. Step 2: Convert to fraction form
    828,712.59/1,242,568.91 = 316,411.18/x
  3. Step 3: Cross multiply
    828,712.59x = 1,242,568.91 × 316,411.18
  4. Step 4: Simplify right side
    828,712.59x = 393,162,697,388.65
  5. Step 5: Solve for x
    x = 393,162,697,388.65/828,712.59
  6. Step 6: Final answer
    x = 474,425.88

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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.