Home / 766,665.32-1,058,005.10-422,513.54

Finding the Fourth Proportional to 766,665.32, 1,058,005.10 and 422,513.54

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Solution

The fourth proportional to 766,665.32, 1,058,005.10 and 422,513.54 is: 583,072.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,665.32 : 1,058,005.10 = 422,513.54 : x
  2. Step 2: Convert to fraction form
    766,665.32/1,058,005.10 = 422,513.54/x
  3. Step 3: Cross multiply
    766,665.32x = 1,058,005.10 × 422,513.54
  4. Step 4: Simplify right side
    766,665.32x = 447,021,476,747.46
  5. Step 5: Solve for x
    x = 447,021,476,747.46/766,665.32
  6. Step 6: Final answer
    x = 583,072.51

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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.