Home / 743,116.09-1,025,563.45-420,883.51

Finding the Fourth Proportional to 743,116.09, 1,025,563.45 and 420,883.51

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Solution

The fourth proportional to 743,116.09, 1,025,563.45 and 420,883.51 is: 580,855.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,116.09 : 1,025,563.45 = 420,883.51 : x
  2. Step 2: Convert to fraction form
    743,116.09/1,025,563.45 = 420,883.51/x
  3. Step 3: Cross multiply
    743,116.09x = 1,025,563.45 × 420,883.51
  4. Step 4: Simplify right side
    743,116.09x = 431,642,737,331.48
  5. Step 5: Solve for x
    x = 431,642,737,331.48/743,116.09
  6. Step 6: Final answer
    x = 580,855.06

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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.