Home / 563,140.68-777,135.06-308,486.28

Finding the Fourth Proportional to 563,140.68, 777,135.06 and 308,486.28

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Solution

The fourth proportional to 563,140.68, 777,135.06 and 308,486.28 is: 425,711.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,140.68 : 777,135.06 = 308,486.28 : x
  2. Step 2: Convert to fraction form
    563,140.68/777,135.06 = 308,486.28/x
  3. Step 3: Cross multiply
    563,140.68x = 777,135.06 × 308,486.28
  4. Step 4: Simplify right side
    563,140.68x = 239,735,503,716.98
  5. Step 5: Solve for x
    x = 239,735,503,716.98/563,140.68
  6. Step 6: Final answer
    x = 425,711.57

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Similar ratio
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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.