Home / 913,391.10-1,370,086.65-380,735.10

Finding the Fourth Proportional to 913,391.10, 1,370,086.65 and 380,735.10

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Solution

The fourth proportional to 913,391.10, 1,370,086.65 and 380,735.10 is: 571,102.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,391.10 : 1,370,086.65 = 380,735.10 : x
  2. Step 2: Convert to fraction form
    913,391.10/1,370,086.65 = 380,735.10/x
  3. Step 3: Cross multiply
    913,391.10x = 1,370,086.65 × 380,735.10
  4. Step 4: Simplify right side
    913,391.10x = 521,640,077,696.42
  5. Step 5: Solve for x
    x = 521,640,077,696.42/913,391.10
  6. Step 6: Final answer
    x = 571,102.65

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Double scale
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Similar ratio
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1.5x scale

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.