Home / 547,424.90-755,438.78-318,111.77

Finding the Fourth Proportional to 547,424.90, 755,438.78 and 318,111.77

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Solution

The fourth proportional to 547,424.90, 755,438.78 and 318,111.77 is: 438,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,424.90 : 755,438.78 = 318,111.77 : x
  2. Step 2: Convert to fraction form
    547,424.90/755,438.78 = 318,111.77/x
  3. Step 3: Cross multiply
    547,424.90x = 755,438.78 × 318,111.77
  4. Step 4: Simplify right side
    547,424.90x = 240,313,970,116.32
  5. Step 5: Solve for x
    x = 240,313,970,116.32/547,424.90
  6. Step 6: Final answer
    x = 438,989.84

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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.