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Finding the Fourth Proportional to 566,289.53, 781,479.10 and 311,640.73

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Solution

The fourth proportional to 566,289.53, 781,479.10 and 311,640.73 is: 430,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,289.53 : 781,479.10 = 311,640.73 : x
  2. Step 2: Convert to fraction form
    566,289.53/781,479.10 = 311,640.73/x
  3. Step 3: Cross multiply
    566,289.53x = 781,479.10 × 311,640.73
  4. Step 4: Simplify right side
    566,289.53x = 243,540,717,203.74
  5. Step 5: Solve for x
    x = 243,540,717,203.74/566,289.53
  6. Step 6: Final answer
    x = 430,063.96

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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.