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Finding the Fourth Proportional to 667,049.88, 920,671.80 and 425,276.76

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Solution

The fourth proportional to 667,049.88, 920,671.80 and 425,276.76 is: 586,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,049.88 : 920,671.80 = 425,276.76 : x
  2. Step 2: Convert to fraction form
    667,049.88/920,671.80 = 425,276.76/x
  3. Step 3: Cross multiply
    667,049.88x = 920,671.80 × 425,276.76
  4. Step 4: Simplify right side
    667,049.88x = 391,540,320,127.37
  5. Step 5: Solve for x
    x = 391,540,320,127.37/667,049.88
  6. Step 6: Final answer
    x = 586,973.08

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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.