Home / 768,416.72-1,060,317.26-428,899.28

Finding the Fourth Proportional to 768,416.72, 1,060,317.26 and 428,899.28

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Solution

The fourth proportional to 768,416.72, 1,060,317.26 and 428,899.28 is: 591,826.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,416.72 : 1,060,317.26 = 428,899.28 : x
  2. Step 2: Convert to fraction form
    768,416.72/1,060,317.26 = 428,899.28/x
  3. Step 3: Cross multiply
    768,416.72x = 1,060,317.26 × 428,899.28
  4. Step 4: Simplify right side
    768,416.72x = 454,769,309,385.57
  5. Step 5: Solve for x
    x = 454,769,309,385.57/768,416.72
  6. Step 6: Final answer
    x = 591,826.41

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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.