Home / 521,621.20-781,994.40-272,303.20

Finding the Fourth Proportional to 521,621.20, 781,994.40 and 272,303.20

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Solution

The fourth proportional to 521,621.20, 781,994.40 and 272,303.20 is: 408,226.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,621.20 : 781,994.40 = 272,303.20 : x
  2. Step 2: Convert to fraction form
    521,621.20/781,994.40 = 272,303.20/x
  3. Step 3: Cross multiply
    521,621.20x = 781,994.40 × 272,303.20
  4. Step 4: Simplify right side
    521,621.20x = 212,939,577,502.08
  5. Step 5: Solve for x
    x = 212,939,577,502.08/521,621.20
  6. Step 6: Final answer
    x = 408,226.46

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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.