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Finding the Fourth Proportional to 520,561.62, 780,920.19 and 165,587.22

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Solution

The fourth proportional to 520,561.62, 780,920.19 and 165,587.22 is: 248,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,561.62 : 780,920.19 = 165,587.22 : x
  2. Step 2: Convert to fraction form
    520,561.62/780,920.19 = 165,587.22/x
  3. Step 3: Cross multiply
    520,561.62x = 780,920.19 × 165,587.22
  4. Step 4: Simplify right side
    520,561.62x = 129,310,403,303.97
  5. Step 5: Solve for x
    x = 129,310,403,303.97/520,561.62
  6. Step 6: Final answer
    x = 248,405.56

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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.