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Finding the Fourth Proportional to 666,467.54, 919,723.18 and 360,543.83

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Solution

The fourth proportional to 666,467.54, 919,723.18 and 360,543.83 is: 497,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,467.54 : 919,723.18 = 360,543.83 : x
  2. Step 2: Convert to fraction form
    666,467.54/919,723.18 = 360,543.83/x
  3. Step 3: Cross multiply
    666,467.54x = 919,723.18 × 360,543.83
  4. Step 4: Simplify right side
    666,467.54x = 331,600,512,357.00
  5. Step 5: Solve for x
    x = 331,600,512,357.00/666,467.54
  6. Step 6: Final answer
    x = 497,549.39

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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.