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Finding the Fourth Proportional to 666,658.08, 919,988.64 and 364,852.80

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Solution

The fourth proportional to 666,658.08, 919,988.64 and 364,852.80 is: 503,497.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,658.08 : 919,988.64 = 364,852.80 : x
  2. Step 2: Convert to fraction form
    666,658.08/919,988.64 = 364,852.80/x
  3. Step 3: Cross multiply
    666,658.08x = 919,988.64 × 364,852.80
  4. Step 4: Simplify right side
    666,658.08x = 335,660,431,272.19
  5. Step 5: Solve for x
    x = 335,660,431,272.19/666,658.08
  6. Step 6: Final answer
    x = 503,497.13

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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.