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Finding the Fourth Proportional to 566,411.21, 781,650.73 and 308,287.55

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Solution

The fourth proportional to 566,411.21, 781,650.73 and 308,287.55 is: 425,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,411.21 : 781,650.73 = 308,287.55 : x
  2. Step 2: Convert to fraction form
    566,411.21/781,650.73 = 308,287.55/x
  3. Step 3: Cross multiply
    566,411.21x = 781,650.73 × 308,287.55
  4. Step 4: Simplify right side
    566,411.21x = 240,973,188,507.41
  5. Step 5: Solve for x
    x = 240,973,188,507.41/566,411.21
  6. Step 6: Final answer
    x = 425,438.59

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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.