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Finding the Fourth Proportional to 566,346.18, 781,557.18 and 311,713.76

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Solution

The fourth proportional to 566,346.18, 781,557.18 and 311,713.76 is: 430,164.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,346.18 : 781,557.18 = 311,713.76 : x
  2. Step 2: Convert to fraction form
    566,346.18/781,557.18 = 311,713.76/x
  3. Step 3: Cross multiply
    566,346.18x = 781,557.18 × 311,713.76
  4. Step 4: Simplify right side
    566,346.18x = 243,622,127,232.80
  5. Step 5: Solve for x
    x = 243,622,127,232.80/566,346.18
  6. Step 6: Final answer
    x = 430,164.69

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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.