Home / 667,764.44-921,560.13-377,275.25

Finding the Fourth Proportional to 667,764.44, 921,560.13 and 377,275.25

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Solution

The fourth proportional to 667,764.44, 921,560.13 and 377,275.25 is: 520,665.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,764.44 : 921,560.13 = 377,275.25 : x
  2. Step 2: Convert to fraction form
    667,764.44/921,560.13 = 377,275.25/x
  3. Step 3: Cross multiply
    667,764.44x = 921,560.13 × 377,275.25
  4. Step 4: Simplify right side
    667,764.44x = 347,681,823,827.98
  5. Step 5: Solve for x
    x = 347,681,823,827.98/667,764.44
  6. Step 6: Final answer
    x = 520,665.38

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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.