Home / 743,017.58-1,025,293.29-420,664.76

Finding the Fourth Proportional to 743,017.58, 1,025,293.29 and 420,664.76

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Solution

The fourth proportional to 743,017.58, 1,025,293.29 and 420,664.76 is: 580,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,017.58 : 1,025,293.29 = 420,664.76 : x
  2. Step 2: Convert to fraction form
    743,017.58/1,025,293.29 = 420,664.76/x
  3. Step 3: Cross multiply
    743,017.58x = 1,025,293.29 × 420,664.76
  4. Step 4: Simplify right side
    743,017.58x = 431,304,755,767.46
  5. Step 5: Solve for x
    x = 431,304,755,767.46/743,017.58
  6. Step 6: Final answer
    x = 580,477.19

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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.