Home / 563,503.28-777,632.81-305,387.60

Finding the Fourth Proportional to 563,503.28, 777,632.81 and 305,387.60

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Solution

The fourth proportional to 563,503.28, 777,632.81 and 305,387.60 is: 421,433.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,503.28 : 777,632.81 = 305,387.60 : x
  2. Step 2: Convert to fraction form
    563,503.28/777,632.81 = 305,387.60/x
  3. Step 3: Cross multiply
    563,503.28x = 777,632.81 × 305,387.60
  4. Step 4: Simplify right side
    563,503.28x = 237,479,412,112.05
  5. Step 5: Solve for x
    x = 237,479,412,112.05/563,503.28
  6. Step 6: Final answer
    x = 421,433.95

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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.