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Finding the Fourth Proportional to 520,094.40, 780,217.20 and 220,574.40

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Solution

The fourth proportional to 520,094.40, 780,217.20 and 220,574.40 is: 330,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,094.40 : 780,217.20 = 220,574.40 : x
  2. Step 2: Convert to fraction form
    520,094.40/780,217.20 = 220,574.40/x
  3. Step 3: Cross multiply
    520,094.40x = 780,217.20 × 220,574.40
  4. Step 4: Simplify right side
    520,094.40x = 172,095,940,759.68
  5. Step 5: Solve for x
    x = 172,095,940,759.68/520,094.40
  6. Step 6: Final answer
    x = 330,893.66

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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.