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Finding the Fourth Proportional to 566,419.25, 781,664.90 and 308,297.76

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Solution

The fourth proportional to 566,419.25, 781,664.90 and 308,297.76 is: 425,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,419.25 : 781,664.90 = 308,297.76 : x
  2. Step 2: Convert to fraction form
    566,419.25/781,664.90 = 308,297.76/x
  3. Step 3: Cross multiply
    566,419.25x = 781,664.90 × 308,297.76
  4. Step 4: Simplify right side
    566,419.25x = 240,985,536,199.14
  5. Step 5: Solve for x
    x = 240,985,536,199.14/566,419.25
  6. Step 6: Final answer
    x = 425,454.36

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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.