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Finding the Fourth Proportional to 566,188.78, 781,326.15 and 308,054.74

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Solution

The fourth proportional to 566,188.78, 781,326.15 and 308,054.74 is: 425,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,188.78 : 781,326.15 = 308,054.74 : x
  2. Step 2: Convert to fraction form
    566,188.78/781,326.15 = 308,054.74/x
  3. Step 3: Cross multiply
    566,188.78x = 781,326.15 × 308,054.74
  4. Step 4: Simplify right side
    566,188.78x = 240,691,220,086.82
  5. Step 5: Solve for x
    x = 240,691,220,086.82/566,188.78
  6. Step 6: Final answer
    x = 425,107.72

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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.