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Finding the Fourth Proportional to 766,720.80, 1,058,255 and 476,551.50

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Solution

The fourth proportional to 766,720.80, 1,058,255 and 476,551.50 is: 657,753.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,720.80 : 1,058,255 = 476,551.50 : x
  2. Step 2: Convert to fraction form
    766,720.80/1,058,255 = 476,551.50/x
  3. Step 3: Cross multiply
    766,720.80x = 1,058,255 × 476,551.50
  4. Step 4: Simplify right side
    766,720.80x = 504,313,007,632.50
  5. Step 5: Solve for x
    x = 504,313,007,632.50/766,720.80
  6. Step 6: Final answer
    x = 657,753.13

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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.