Home / 743,290.60-1,025,717.38-421,030.44

Finding the Fourth Proportional to 743,290.60, 1,025,717.38 and 421,030.44

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Solution

The fourth proportional to 743,290.60, 1,025,717.38 and 421,030.44 is: 581,008.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,290.60 : 1,025,717.38 = 421,030.44 : x
  2. Step 2: Convert to fraction form
    743,290.60/1,025,717.38 = 421,030.44/x
  3. Step 3: Cross multiply
    743,290.60x = 1,025,717.38 × 421,030.44
  4. Step 4: Simplify right side
    743,290.60x = 431,858,239,817.05
  5. Step 5: Solve for x
    x = 431,858,239,817.05/743,290.60
  6. Step 6: Final answer
    x = 581,008.61

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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.