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Finding the Fourth Proportional to 652,260.26, 900,128.32 and 394,101.20

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Solution

The fourth proportional to 652,260.26, 900,128.32 and 394,101.20 is: 543,865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,260.26 : 900,128.32 = 394,101.20 : x
  2. Step 2: Convert to fraction form
    652,260.26/900,128.32 = 394,101.20/x
  3. Step 3: Cross multiply
    652,260.26x = 900,128.32 × 394,101.20
  4. Step 4: Simplify right side
    652,260.26x = 354,741,651,065.98
  5. Step 5: Solve for x
    x = 354,741,651,065.98/652,260.26
  6. Step 6: Final answer
    x = 543,865.19

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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.