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Finding the Fourth Proportional to 662,258.69, 913,936.52 and 469,012.13

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Solution

The fourth proportional to 662,258.69, 913,936.52 and 469,012.13 is: 647,250.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,258.69 : 913,936.52 = 469,012.13 : x
  2. Step 2: Convert to fraction form
    662,258.69/913,936.52 = 469,012.13/x
  3. Step 3: Cross multiply
    662,258.69x = 913,936.52 × 469,012.13
  4. Step 4: Simplify right side
    662,258.69x = 428,647,313,929.99
  5. Step 5: Solve for x
    x = 428,647,313,929.99/662,258.69
  6. Step 6: Final answer
    x = 647,250.57

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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.