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Finding the Fourth Proportional to 878,949.72, 1,318,424.58 and 317,853

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Solution

The fourth proportional to 878,949.72, 1,318,424.58 and 317,853 is: 476,779.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,949.72 : 1,318,424.58 = 317,853 : x
  2. Step 2: Convert to fraction form
    878,949.72/1,318,424.58 = 317,853/x
  3. Step 3: Cross multiply
    878,949.72x = 1,318,424.58 × 317,853
  4. Step 4: Simplify right side
    878,949.72x = 419,065,208,026.74
  5. Step 5: Solve for x
    x = 419,065,208,026.74/878,949.72
  6. Step 6: Final answer
    x = 476,779.50

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Similar ratio
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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.