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Finding the Fourth Proportional to 879,744, 1,214,053.20 and 477,336

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Solution

The fourth proportional to 879,744, 1,214,053.20 and 477,336 is: 658,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,744 : 1,214,053.20 = 477,336 : x
  2. Step 2: Convert to fraction form
    879,744/1,214,053.20 = 477,336/x
  3. Step 3: Cross multiply
    879,744x = 1,214,053.20 × 477,336
  4. Step 4: Simplify right side
    879,744x = 579,511,298,275.20
  5. Step 5: Solve for x
    x = 579,511,298,275.20/879,744
  6. Step 6: Final answer
    x = 658,727.20

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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.