Home / 913,656.89-1,371,832.56-509,638.44

Finding the Fourth Proportional to 913,656.89, 1,371,832.56 and 509,638.44

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Solution

The fourth proportional to 913,656.89, 1,371,832.56 and 509,638.44 is: 765,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,656.89 : 1,371,832.56 = 509,638.44 : x
  2. Step 2: Convert to fraction form
    913,656.89/1,371,832.56 = 509,638.44/x
  3. Step 3: Cross multiply
    913,656.89x = 1,371,832.56 × 509,638.44
  4. Step 4: Simplify right side
    913,656.89x = 699,138,605,819.61
  5. Step 5: Solve for x
    x = 699,138,605,819.61/913,656.89
  6. Step 6: Final answer
    x = 765,209.15

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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.