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Finding the Fourth Proportional to 520,042.40, 779,674.80 and 220,277.60

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Solution

The fourth proportional to 520,042.40, 779,674.80 and 220,277.60 is: 330,251.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,042.40 : 779,674.80 = 220,277.60 : x
  2. Step 2: Convert to fraction form
    520,042.40/779,674.80 = 220,277.60/x
  3. Step 3: Cross multiply
    520,042.40x = 779,674.80 × 220,277.60
  4. Step 4: Simplify right side
    520,042.40x = 171,744,893,724.48
  5. Step 5: Solve for x
    x = 171,744,893,724.48/520,042.40
  6. Step 6: Final answer
    x = 330,251.71

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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.