Home / 520,022.90-779,645.55-220,258.10

Finding the Fourth Proportional to 520,022.90, 779,645.55 and 220,258.10

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Solution

The fourth proportional to 520,022.90, 779,645.55 and 220,258.10 is: 330,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,022.90 : 779,645.55 = 220,258.10 : x
  2. Step 2: Convert to fraction form
    520,022.90/779,645.55 = 220,258.10/x
  3. Step 3: Cross multiply
    520,022.90x = 779,645.55 × 220,258.10
  4. Step 4: Simplify right side
    520,022.90x = 171,723,247,516.46
  5. Step 5: Solve for x
    x = 171,723,247,516.46/520,022.90
  6. Step 6: Final answer
    x = 330,222.47

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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.