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Finding the Fourth Proportional to 520,083.90, 778,959.45 and 520,083.90

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Solution

The fourth proportional to 520,083.90, 778,959.45 and 520,083.90 is: 778,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,083.90 : 778,959.45 = 520,083.90 : x
  2. Step 2: Convert to fraction form
    520,083.90/778,959.45 = 520,083.90/x
  3. Step 3: Cross multiply
    520,083.90x = 778,959.45 × 520,083.90
  4. Step 4: Simplify right side
    520,083.90x = 405,124,268,697.86
  5. Step 5: Solve for x
    x = 405,124,268,697.86/520,083.90
  6. Step 6: Final answer
    x = 778,959.45

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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.