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Finding the Fourth Proportional to 978,051.90, 1,467,077.85 and 777,285.30

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Solution

The fourth proportional to 978,051.90, 1,467,077.85 and 777,285.30 is: 1,165,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,051.90 : 1,467,077.85 = 777,285.30 : x
  2. Step 2: Convert to fraction form
    978,051.90/1,467,077.85 = 777,285.30/x
  3. Step 3: Cross multiply
    978,051.90x = 1,467,077.85 × 777,285.30
  4. Step 4: Simplify right side
    978,051.90x = 1,140,338,046,760.61
  5. Step 5: Solve for x
    x = 1,140,338,046,760.61/978,051.90
  6. Step 6: Final answer
    x = 1,165,927.95

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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.