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Finding the Fourth Proportional to 519,251.20, 778,902.40 and 270,419.20

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Solution

The fourth proportional to 519,251.20, 778,902.40 and 270,419.20 is: 405,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,251.20 : 778,902.40 = 270,419.20 : x
  2. Step 2: Convert to fraction form
    519,251.20/778,902.40 = 270,419.20/x
  3. Step 3: Cross multiply
    519,251.20x = 778,902.40 × 270,419.20
  4. Step 4: Simplify right side
    519,251.20x = 210,630,163,886.08
  5. Step 5: Solve for x
    x = 210,630,163,886.08/519,251.20
  6. Step 6: Final answer
    x = 405,642.13

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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.