Home / 563,440.85-777,551.33-305,317.90

Finding the Fourth Proportional to 563,440.85, 777,551.33 and 305,317.90

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Solution

The fourth proportional to 563,440.85, 777,551.33 and 305,317.90 is: 421,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,440.85 : 777,551.33 = 305,317.90 : x
  2. Step 2: Convert to fraction form
    563,440.85/777,551.33 = 305,317.90/x
  3. Step 3: Cross multiply
    563,440.85x = 777,551.33 × 305,317.90
  4. Step 4: Simplify right side
    563,440.85x = 237,400,339,217.81
  5. Step 5: Solve for x
    x = 237,400,339,217.81/563,440.85
  6. Step 6: Final answer
    x = 421,340.30

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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.