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Finding the Fourth Proportional to 667,765.44, 921,561.51 and 377,276.25

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Solution

The fourth proportional to 667,765.44, 921,561.51 and 377,276.25 is: 520,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,765.44 : 921,561.51 = 377,276.25 : x
  2. Step 2: Convert to fraction form
    667,765.44/921,561.51 = 377,276.25/x
  3. Step 3: Cross multiply
    667,765.44x = 921,561.51 × 377,276.25
  4. Step 4: Simplify right side
    667,765.44x = 347,683,270,637.14
  5. Step 5: Solve for x
    x = 347,683,270,637.14/667,765.44
  6. Step 6: Final answer
    x = 520,666.76

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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.