Home / 520,021.90-779,644.05-220,257.10

Finding the Fourth Proportional to 520,021.90, 779,644.05 and 220,257.10

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Solution

The fourth proportional to 520,021.90, 779,644.05 and 220,257.10 is: 330,220.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,021.90 : 779,644.05 = 220,257.10 : x
  2. Step 2: Convert to fraction form
    520,021.90/779,644.05 = 220,257.10/x
  3. Step 3: Cross multiply
    520,021.90x = 779,644.05 × 220,257.10
  4. Step 4: Simplify right side
    520,021.90x = 171,722,137,485.26
  5. Step 5: Solve for x
    x = 171,722,137,485.26/520,021.90
  6. Step 6: Final answer
    x = 330,220.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.