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Finding the Fourth Proportional to 551,428.70, 827,143.05 and 528,100.70

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Solution

The fourth proportional to 551,428.70, 827,143.05 and 528,100.70 is: 792,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,428.70 : 827,143.05 = 528,100.70 : x
  2. Step 2: Convert to fraction form
    551,428.70/827,143.05 = 528,100.70/x
  3. Step 3: Cross multiply
    551,428.70x = 827,143.05 × 528,100.70
  4. Step 4: Simplify right side
    551,428.70x = 436,814,823,705.14
  5. Step 5: Solve for x
    x = 436,814,823,705.14/551,428.70
  6. Step 6: Final answer
    x = 792,151.05

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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.