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Finding the Fourth Proportional to 586,296.80, 880,028.40 and 287,115.20

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Solution

The fourth proportional to 586,296.80, 880,028.40 and 287,115.20 is: 430,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,296.80 : 880,028.40 = 287,115.20 : x
  2. Step 2: Convert to fraction form
    586,296.80/880,028.40 = 287,115.20/x
  3. Step 3: Cross multiply
    586,296.80x = 880,028.40 × 287,115.20
  4. Step 4: Simplify right side
    586,296.80x = 252,669,530,071.68
  5. Step 5: Solve for x
    x = 252,669,530,071.68/586,296.80
  6. Step 6: Final answer
    x = 430,958.40

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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.