Home / 684,790.89-1,026,629.60-285,728.91

Finding the Fourth Proportional to 684,790.89, 1,026,629.60 and 285,728.91

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Solution

The fourth proportional to 684,790.89, 1,026,629.60 and 285,728.91 is: 428,361.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,790.89 : 1,026,629.60 = 285,728.91 : x
  2. Step 2: Convert to fraction form
    684,790.89/1,026,629.60 = 285,728.91/x
  3. Step 3: Cross multiply
    684,790.89x = 1,026,629.60 × 285,728.91
  4. Step 4: Simplify right side
    684,790.89x = 293,337,755,153.09
  5. Step 5: Solve for x
    x = 293,337,755,153.09/684,790.89
  6. Step 6: Final answer
    x = 428,361.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.