Home / 721,469.49-1,082,203.02-289,381.74

Finding the Fourth Proportional to 721,469.49, 1,082,203.02 and 289,381.74

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Solution

The fourth proportional to 721,469.49, 1,082,203.02 and 289,381.74 is: 434,072.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,469.49 : 1,082,203.02 = 289,381.74 : x
  2. Step 2: Convert to fraction form
    721,469.49/1,082,203.02 = 289,381.74/x
  3. Step 3: Cross multiply
    721,469.49x = 1,082,203.02 × 289,381.74
  4. Step 4: Simplify right side
    721,469.49x = 313,169,792,960.86
  5. Step 5: Solve for x
    x = 313,169,792,960.86/721,469.49
  6. Step 6: Final answer
    x = 434,072.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.