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Finding the Fourth Proportional to 520,081.70, 778,394.55 and 377,521.70

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Solution

The fourth proportional to 520,081.70, 778,394.55 and 377,521.70 is: 565,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,081.70 : 778,394.55 = 377,521.70 : x
  2. Step 2: Convert to fraction form
    520,081.70/778,394.55 = 377,521.70/x
  3. Step 3: Cross multiply
    520,081.70x = 778,394.55 × 377,521.70
  4. Step 4: Simplify right side
    520,081.70x = 293,860,833,786.74
  5. Step 5: Solve for x
    x = 293,860,833,786.74/520,081.70
  6. Step 6: Final answer
    x = 565,028.21

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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.