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Finding the Fourth Proportional to 613,012.26, 845,943.66 and 354,900.09

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Solution

The fourth proportional to 613,012.26, 845,943.66 and 354,900.09 is: 489,754.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,012.26 : 845,943.66 = 354,900.09 : x
  2. Step 2: Convert to fraction form
    613,012.26/845,943.66 = 354,900.09/x
  3. Step 3: Cross multiply
    613,012.26x = 845,943.66 × 354,900.09
  4. Step 4: Simplify right side
    613,012.26x = 300,225,475,064.71
  5. Step 5: Solve for x
    x = 300,225,475,064.71/613,012.26
  6. Step 6: Final answer
    x = 489,754.44

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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.