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Finding the Fourth Proportional to 566,401.68, 781,656.48 and 311,776.56

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Solution

The fourth proportional to 566,401.68, 781,656.48 and 311,776.56 is: 430,263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,401.68 : 781,656.48 = 311,776.56 : x
  2. Step 2: Convert to fraction form
    566,401.68/781,656.48 = 311,776.56/x
  3. Step 3: Cross multiply
    566,401.68x = 781,656.48 × 311,776.56
  4. Step 4: Simplify right side
    566,401.68x = 243,702,168,436.11
  5. Step 5: Solve for x
    x = 243,702,168,436.11/566,401.68
  6. Step 6: Final answer
    x = 430,263.85

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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.