Home / 743,431.75-1,025,986.55-421,144.49

Finding the Fourth Proportional to 743,431.75, 1,025,986.55 and 421,144.49

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Solution

The fourth proportional to 743,431.75, 1,025,986.55 and 421,144.49 is: 581,208.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,431.75 : 1,025,986.55 = 421,144.49 : x
  2. Step 2: Convert to fraction form
    743,431.75/1,025,986.55 = 421,144.49/x
  3. Step 3: Cross multiply
    743,431.75x = 1,025,986.55 × 421,144.49
  4. Step 4: Simplify right side
    743,431.75x = 432,088,582,805.85
  5. Step 5: Solve for x
    x = 432,088,582,805.85/743,431.75
  6. Step 6: Final answer
    x = 581,208.14

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Double scale
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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.