Home / 739,981.70-1,109,486.55-290,431.70

Finding the Fourth Proportional to 739,981.70, 1,109,486.55 and 290,431.70

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Solution

The fourth proportional to 739,981.70, 1,109,486.55 and 290,431.70 is: 435,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,981.70 : 1,109,486.55 = 290,431.70 : x
  2. Step 2: Convert to fraction form
    739,981.70/1,109,486.55 = 290,431.70/x
  3. Step 3: Cross multiply
    739,981.70x = 1,109,486.55 × 290,431.70
  4. Step 4: Simplify right side
    739,981.70x = 322,230,064,843.64
  5. Step 5: Solve for x
    x = 322,230,064,843.64/739,981.70
  6. Step 6: Final answer
    x = 435,456.80

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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.