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Finding the Fourth Proportional to 486,653.20, 666,703.68 and 468,459.28

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Solution

The fourth proportional to 486,653.20, 666,703.68 and 468,459.28 is: 641,778.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,653.20 : 666,703.68 = 468,459.28 : x
  2. Step 2: Convert to fraction form
    486,653.20/666,703.68 = 468,459.28/x
  3. Step 3: Cross multiply
    486,653.20x = 666,703.68 × 468,459.28
  4. Step 4: Simplify right side
    486,653.20x = 312,323,525,906.15
  5. Step 5: Solve for x
    x = 312,323,525,906.15/486,653.20
  6. Step 6: Final answer
    x = 641,778.43

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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.