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Finding the Fourth Proportional to 551,415.70, 827,123.55 and 528,087.70

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Solution

The fourth proportional to 551,415.70, 827,123.55 and 528,087.70 is: 792,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,415.70 : 827,123.55 = 528,087.70 : x
  2. Step 2: Convert to fraction form
    551,415.70/827,123.55 = 528,087.70/x
  3. Step 3: Cross multiply
    551,415.70x = 827,123.55 × 528,087.70
  4. Step 4: Simplify right side
    551,415.70x = 436,793,773,135.34
  5. Step 5: Solve for x
    x = 436,793,773,135.34/551,415.70
  6. Step 6: Final answer
    x = 792,131.55

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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.