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Finding the Fourth Proportional to 566,508.96, 781,782.48 and 311,860.17

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Solution

The fourth proportional to 566,508.96, 781,782.48 and 311,860.17 is: 430,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,508.96 : 781,782.48 = 311,860.17 : x
  2. Step 2: Convert to fraction form
    566,508.96/781,782.48 = 311,860.17/x
  3. Step 3: Cross multiply
    566,508.96x = 781,782.48 × 311,860.17
  4. Step 4: Simplify right side
    566,508.96x = 243,806,817,115.82
  5. Step 5: Solve for x
    x = 243,806,817,115.82/566,508.96
  6. Step 6: Final answer
    x = 430,367.10

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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.