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Finding the Fourth Proportional to 713,481.20, 1,070,221.80 and 293,058.80

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Solution

The fourth proportional to 713,481.20, 1,070,221.80 and 293,058.80 is: 439,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,481.20 : 1,070,221.80 = 293,058.80 : x
  2. Step 2: Convert to fraction form
    713,481.20/1,070,221.80 = 293,058.80/x
  3. Step 3: Cross multiply
    713,481.20x = 1,070,221.80 × 293,058.80
  4. Step 4: Simplify right side
    713,481.20x = 313,637,916,441.84
  5. Step 5: Solve for x
    x = 313,637,916,441.84/713,481.20
  6. Step 6: Final answer
    x = 439,588.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.