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Finding the Fourth Proportional to 800,883.84, 1,105,204.86 and 438,300.30

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Solution

The fourth proportional to 800,883.84, 1,105,204.86 and 438,300.30 is: 604,846.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,883.84 : 1,105,204.86 = 438,300.30 : x
  2. Step 2: Convert to fraction form
    800,883.84/1,105,204.86 = 438,300.30/x
  3. Step 3: Cross multiply
    800,883.84x = 1,105,204.86 × 438,300.30
  4. Step 4: Simplify right side
    800,883.84x = 484,411,621,699.46
  5. Step 5: Solve for x
    x = 484,411,621,699.46/800,883.84
  6. Step 6: Final answer
    x = 604,846.29

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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.