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Finding the Fourth Proportional to 566,392.92, 781,605.90 and 311,738.64

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Solution

The fourth proportional to 566,392.92, 781,605.90 and 311,738.64 is: 430,190.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,392.92 : 781,605.90 = 311,738.64 : x
  2. Step 2: Convert to fraction form
    566,392.92/781,605.90 = 311,738.64/x
  3. Step 3: Cross multiply
    566,392.92x = 781,605.90 × 311,738.64
  4. Step 4: Simplify right side
    566,392.92x = 243,656,760,281.98
  5. Step 5: Solve for x
    x = 243,656,760,281.98/566,392.92
  6. Step 6: Final answer
    x = 430,190.34

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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.