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Finding the Fourth Proportional to 472,181.89, 651,426.04 and 290,578.54

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Solution

The fourth proportional to 472,181.89, 651,426.04 and 290,578.54 is: 400,884.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,181.89 : 651,426.04 = 290,578.54 : x
  2. Step 2: Convert to fraction form
    472,181.89/651,426.04 = 290,578.54/x
  3. Step 3: Cross multiply
    472,181.89x = 651,426.04 × 290,578.54
  4. Step 4: Simplify right side
    472,181.89x = 189,290,422,911.16
  5. Step 5: Solve for x
    x = 189,290,422,911.16/472,181.89
  6. Step 6: Final answer
    x = 400,884.55

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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.