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Finding the Fourth Proportional to 563,015.57, 777,017.33 and 321,334.74

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Solution

The fourth proportional to 563,015.57, 777,017.33 and 321,334.74 is: 443,473.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,015.57 : 777,017.33 = 321,334.74 : x
  2. Step 2: Convert to fraction form
    563,015.57/777,017.33 = 321,334.74/x
  3. Step 3: Cross multiply
    563,015.57x = 777,017.33 × 321,334.74
  4. Step 4: Simplify right side
    563,015.57x = 249,682,660,104.37
  5. Step 5: Solve for x
    x = 249,682,660,104.37/563,015.57
  6. Step 6: Final answer
    x = 443,473.81

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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.