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Finding the Fourth Proportional to 520,092.90, 778,972.95 and 520,092.90

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Solution

The fourth proportional to 520,092.90, 778,972.95 and 520,092.90 is: 778,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,092.90 : 778,972.95 = 520,092.90 : x
  2. Step 2: Convert to fraction form
    520,092.90/778,972.95 = 520,092.90/x
  3. Step 3: Cross multiply
    520,092.90x = 778,972.95 × 520,092.90
  4. Step 4: Simplify right side
    520,092.90x = 405,138,300,587.06
  5. Step 5: Solve for x
    x = 405,138,300,587.06/520,092.90
  6. Step 6: Final answer
    x = 778,972.95

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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.