Home / 766,763.40-1,058,140.62-422,611.86

Finding the Fourth Proportional to 766,763.40, 1,058,140.62 and 422,611.86

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Solution

The fourth proportional to 766,763.40, 1,058,140.62 and 422,611.86 is: 583,208.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,763.40 : 1,058,140.62 = 422,611.86 : x
  2. Step 2: Convert to fraction form
    766,763.40/1,058,140.62 = 422,611.86/x
  3. Step 3: Cross multiply
    766,763.40x = 1,058,140.62 × 422,611.86
  4. Step 4: Simplify right side
    766,763.40x = 447,182,775,559.75
  5. Step 5: Solve for x
    x = 447,182,775,559.75/766,763.40
  6. Step 6: Final answer
    x = 583,208.30

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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.