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Finding the Fourth Proportional to 563,065.68, 777,049.56 and 308,431.20

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Solution

The fourth proportional to 563,065.68, 777,049.56 and 308,431.20 is: 425,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,065.68 : 777,049.56 = 308,431.20 : x
  2. Step 2: Convert to fraction form
    563,065.68/777,049.56 = 308,431.20/x
  3. Step 3: Cross multiply
    563,065.68x = 777,049.56 × 308,431.20
  4. Step 4: Simplify right side
    563,065.68x = 239,666,328,250.27
  5. Step 5: Solve for x
    x = 239,666,328,250.27/563,065.68
  6. Step 6: Final answer
    x = 425,645.42

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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.