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Finding the Fourth Proportional to 666,667.40, 919,994.52 and 360,737.08

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Solution

The fourth proportional to 666,667.40, 919,994.52 and 360,737.08 is: 497,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,667.40 : 919,994.52 = 360,737.08 : x
  2. Step 2: Convert to fraction form
    666,667.40/919,994.52 = 360,737.08/x
  3. Step 3: Cross multiply
    666,667.40x = 919,994.52 × 360,737.08
  4. Step 4: Simplify right side
    666,667.40x = 331,876,136,760.80
  5. Step 5: Solve for x
    x = 331,876,136,760.80/666,667.40
  6. Step 6: Final answer
    x = 497,813.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.