Home / 745,146.75-1,028,436.71-439,205.27

Finding the Fourth Proportional to 745,146.75, 1,028,436.71 and 439,205.27

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Solution

The fourth proportional to 745,146.75, 1,028,436.71 and 439,205.27 is: 606,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,146.75 : 1,028,436.71 = 439,205.27 : x
  2. Step 2: Convert to fraction form
    745,146.75/1,028,436.71 = 439,205.27/x
  3. Step 3: Cross multiply
    745,146.75x = 1,028,436.71 × 439,205.27
  4. Step 4: Simplify right side
    745,146.75x = 451,694,822,893.46
  5. Step 5: Solve for x
    x = 451,694,822,893.46/745,146.75
  6. Step 6: Final answer
    x = 606,182.37

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Half scale
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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.