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Finding the Fourth Proportional to 563,287.47, 777,367.83 and 321,647.66

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Solution

The fourth proportional to 563,287.47, 777,367.83 and 321,647.66 is: 443,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,287.47 : 777,367.83 = 321,647.66 : x
  2. Step 2: Convert to fraction form
    563,287.47/777,367.83 = 321,647.66/x
  3. Step 3: Cross multiply
    563,287.47x = 777,367.83 × 321,647.66
  4. Step 4: Simplify right side
    563,287.47x = 250,038,543,478.78
  5. Step 5: Solve for x
    x = 250,038,543,478.78/563,287.47
  6. Step 6: Final answer
    x = 443,891.55

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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.