Home / 765,043.38-1,055,166.75-493,155.54

Finding the Fourth Proportional to 765,043.38, 1,055,166.75 and 493,155.54

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Solution

The fourth proportional to 765,043.38, 1,055,166.75 and 493,155.54 is: 680,172.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,043.38 : 1,055,166.75 = 493,155.54 : x
  2. Step 2: Convert to fraction form
    765,043.38/1,055,166.75 = 493,155.54/x
  3. Step 3: Cross multiply
    765,043.38x = 1,055,166.75 × 493,155.54
  4. Step 4: Simplify right side
    765,043.38x = 520,361,328,386.30
  5. Step 5: Solve for x
    x = 520,361,328,386.30/765,043.38
  6. Step 6: Final answer
    x = 680,172.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.