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Finding the Fourth Proportional to 566,410.21, 781,649.35 and 308,286.55

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Solution

The fourth proportional to 566,410.21, 781,649.35 and 308,286.55 is: 425,437.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,410.21 : 781,649.35 = 308,286.55 : x
  2. Step 2: Convert to fraction form
    566,410.21/781,649.35 = 308,286.55/x
  3. Step 3: Cross multiply
    566,410.21x = 781,649.35 × 308,286.55
  4. Step 4: Simplify right side
    566,410.21x = 240,971,980,296.26
  5. Step 5: Solve for x
    x = 240,971,980,296.26/566,410.21
  6. Step 6: Final answer
    x = 425,437.21

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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.