Home / 787,530.40-1,181,878.80-521,202.40

Finding the Fourth Proportional to 787,530.40, 1,181,878.80 and 521,202.40

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Solution

The fourth proportional to 787,530.40, 1,181,878.80 and 521,202.40 is: 782,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,530.40 : 1,181,878.80 = 521,202.40 : x
  2. Step 2: Convert to fraction form
    787,530.40/1,181,878.80 = 521,202.40/x
  3. Step 3: Cross multiply
    787,530.40x = 1,181,878.80 × 521,202.40
  4. Step 4: Simplify right side
    787,530.40x = 615,998,067,069.12
  5. Step 5: Solve for x
    x = 615,998,067,069.12/787,530.40
  6. Step 6: Final answer
    x = 782,189.57

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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.