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Finding the Fourth Proportional to 486,628.28, 666,669.60 and 468,434.30

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Solution

The fourth proportional to 486,628.28, 666,669.60 and 468,434.30 is: 641,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,628.28 : 666,669.60 = 468,434.30 : x
  2. Step 2: Convert to fraction form
    486,628.28/666,669.60 = 468,434.30/x
  3. Step 3: Cross multiply
    486,628.28x = 666,669.60 × 468,434.30
  4. Step 4: Simplify right side
    486,628.28x = 312,290,904,073.93
  5. Step 5: Solve for x
    x = 312,290,904,073.93/486,628.28
  6. Step 6: Final answer
    x = 641,744.26

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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.