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Finding the Fourth Proportional to 766,710.92, 1,058,068.22 and 422,559.20

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Solution

The fourth proportional to 766,710.92, 1,058,068.22 and 422,559.20 is: 583,135.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,710.92 : 1,058,068.22 = 422,559.20 : x
  2. Step 2: Convert to fraction form
    766,710.92/1,058,068.22 = 422,559.20/x
  3. Step 3: Cross multiply
    766,710.92x = 1,058,068.22 × 422,559.20
  4. Step 4: Simplify right side
    766,710.92x = 447,096,453,185.49
  5. Step 5: Solve for x
    x = 447,096,453,185.49/766,710.92
  6. Step 6: Final answer
    x = 583,135.63

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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.