Home / 520,035.30-779,438.55-220,515.30

Finding the Fourth Proportional to 520,035.30, 779,438.55 and 220,515.30

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Solution

The fourth proportional to 520,035.30, 779,438.55 and 220,515.30 is: 330,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,035.30 : 779,438.55 = 220,515.30 : x
  2. Step 2: Convert to fraction form
    520,035.30/779,438.55 = 220,515.30/x
  3. Step 3: Cross multiply
    520,035.30x = 779,438.55 × 220,515.30
  4. Step 4: Simplify right side
    520,035.30x = 171,878,125,684.82
  5. Step 5: Solve for x
    x = 171,878,125,684.82/520,035.30
  6. Step 6: Final answer
    x = 330,512.42

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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.