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Finding the Fourth Proportional to 878,274.26, 1,212,019.28 and 475,866.26

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Solution

The fourth proportional to 878,274.26, 1,212,019.28 and 475,866.26 is: 656,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,274.26 : 1,212,019.28 = 475,866.26 : x
  2. Step 2: Convert to fraction form
    878,274.26/1,212,019.28 = 475,866.26/x
  3. Step 3: Cross multiply
    878,274.26x = 1,212,019.28 × 475,866.26
  4. Step 4: Simplify right side
    878,274.26x = 576,759,081,821.49
  5. Step 5: Solve for x
    x = 576,759,081,821.49/878,274.26
  6. Step 6: Final answer
    x = 656,695.87

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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.