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Finding the Fourth Proportional to 612,445.44, 918,878.66 and 275,722.17

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Solution

The fourth proportional to 612,445.44, 918,878.66 and 275,722.17 is: 413,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,445.44 : 918,878.66 = 275,722.17 : x
  2. Step 2: Convert to fraction form
    612,445.44/918,878.66 = 275,722.17/x
  3. Step 3: Cross multiply
    612,445.44x = 918,878.66 × 275,722.17
  4. Step 4: Simplify right side
    612,445.44x = 253,355,218,101.89
  5. Step 5: Solve for x
    x = 253,355,218,101.89/612,445.44
  6. Step 6: Final answer
    x = 413,678.02

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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.