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Finding the Fourth Proportional to 417,129.75, 620,328.65 and 403,843.59

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Solution

The fourth proportional to 417,129.75, 620,328.65 and 403,843.59 is: 600,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,129.75 : 620,328.65 = 403,843.59 : x
  2. Step 2: Convert to fraction form
    417,129.75/620,328.65 = 403,843.59/x
  3. Step 3: Cross multiply
    417,129.75x = 620,328.65 × 403,843.59
  4. Step 4: Simplify right side
    417,129.75x = 250,515,746,976.64
  5. Step 5: Solve for x
    x = 250,515,746,976.64/417,129.75
  6. Step 6: Final answer
    x = 600,570.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.