Home / 778,228.38-1,073,971.56-438,696.63

Finding the Fourth Proportional to 778,228.38, 1,073,971.56 and 438,696.63

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Solution

The fourth proportional to 778,228.38, 1,073,971.56 and 438,696.63 is: 605,410.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,228.38 : 1,073,971.56 = 438,696.63 : x
  2. Step 2: Convert to fraction form
    778,228.38/1,073,971.56 = 438,696.63/x
  3. Step 3: Cross multiply
    778,228.38x = 1,073,971.56 × 438,696.63
  4. Step 4: Simplify right side
    778,228.38x = 471,147,704,087.84
  5. Step 5: Solve for x
    x = 471,147,704,087.84/778,228.38
  6. Step 6: Final answer
    x = 605,410.59

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Double scale
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1.5x scale

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.