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Finding the Fourth Proportional to 563,403.96, 777,571.92 and 321,631.92

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Solution

The fourth proportional to 563,403.96, 777,571.92 and 321,631.92 is: 443,894.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,403.96 : 777,571.92 = 321,631.92 : x
  2. Step 2: Convert to fraction form
    563,403.96/777,571.92 = 321,631.92/x
  3. Step 3: Cross multiply
    563,403.96x = 777,571.92 × 321,631.92
  4. Step 4: Simplify right side
    563,403.96x = 250,091,949,567.69
  5. Step 5: Solve for x
    x = 250,091,949,567.69/563,403.96
  6. Step 6: Final answer
    x = 443,894.55

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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.