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Finding the Fourth Proportional to 472,163.16, 647,919.51 and 429,395.16

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Solution

The fourth proportional to 472,163.16, 647,919.51 and 429,395.16 is: 589,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,163.16 : 647,919.51 = 429,395.16 : x
  2. Step 2: Convert to fraction form
    472,163.16/647,919.51 = 429,395.16/x
  3. Step 3: Cross multiply
    472,163.16x = 647,919.51 × 429,395.16
  4. Step 4: Simplify right side
    472,163.16x = 278,213,501,663.57
  5. Step 5: Solve for x
    x = 278,213,501,663.57/472,163.16
  6. Step 6: Final answer
    x = 589,231.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.