Home / 767,138.98-1,058,665.71-427,570.78

Finding the Fourth Proportional to 767,138.98, 1,058,665.71 and 427,570.78

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Solution

The fourth proportional to 767,138.98, 1,058,665.71 and 427,570.78 is: 590,055.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,138.98 : 1,058,665.71 = 427,570.78 : x
  2. Step 2: Convert to fraction form
    767,138.98/1,058,665.71 = 427,570.78/x
  3. Step 3: Cross multiply
    767,138.98x = 1,058,665.71 × 427,570.78
  4. Step 4: Simplify right side
    767,138.98x = 452,654,523,383.95
  5. Step 5: Solve for x
    x = 452,654,523,383.95/767,138.98
  6. Step 6: Final answer
    x = 590,055.43

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Double scale
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1.5x scale

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.