Home / 917,620.20-1,376,430.30-386,179.20

Finding the Fourth Proportional to 917,620.20, 1,376,430.30 and 386,179.20

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Solution

The fourth proportional to 917,620.20, 1,376,430.30 and 386,179.20 is: 579,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,620.20 : 1,376,430.30 = 386,179.20 : x
  2. Step 2: Convert to fraction form
    917,620.20/1,376,430.30 = 386,179.20/x
  3. Step 3: Cross multiply
    917,620.20x = 1,376,430.30 × 386,179.20
  4. Step 4: Simplify right side
    917,620.20x = 531,548,752,109.76
  5. Step 5: Solve for x
    x = 531,548,752,109.76/917,620.20
  6. Step 6: Final answer
    x = 579,268.80

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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.