Home / 743,609.70-1,026,178.61-421,381.44

Finding the Fourth Proportional to 743,609.70, 1,026,178.61 and 421,381.44

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Solution

The fourth proportional to 743,609.70, 1,026,178.61 and 421,381.44 is: 581,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,609.70 : 1,026,178.61 = 421,381.44 : x
  2. Step 2: Convert to fraction form
    743,609.70/1,026,178.61 = 421,381.44/x
  3. Step 3: Cross multiply
    743,609.70x = 1,026,178.61 × 421,381.44
  4. Step 4: Simplify right side
    743,609.70x = 432,412,618,272.09
  5. Step 5: Solve for x
    x = 432,412,618,272.09/743,609.70
  6. Step 6: Final answer
    x = 581,504.81

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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.