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Finding the Fourth Proportional to 566,414.68, 781,622.58 and 311,717.20

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Solution

The fourth proportional to 566,414.68, 781,622.58 and 311,717.20 is: 430,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,414.68 : 781,622.58 = 311,717.20 : x
  2. Step 2: Convert to fraction form
    566,414.68/781,622.58 = 311,717.20/x
  3. Step 3: Cross multiply
    566,414.68x = 781,622.58 × 311,717.20
  4. Step 4: Simplify right side
    566,414.68x = 243,645,202,094.38
  5. Step 5: Solve for x
    x = 243,645,202,094.38/566,414.68
  6. Step 6: Final answer
    x = 430,153.40

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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.