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Finding the Fourth Proportional to 666,744, 920,115.36 and 364,931.52

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Solution

The fourth proportional to 666,744, 920,115.36 and 364,931.52 is: 503,610.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,744 : 920,115.36 = 364,931.52 : x
  2. Step 2: Convert to fraction form
    666,744/920,115.36 = 364,931.52/x
  3. Step 3: Cross multiply
    666,744x = 920,115.36 × 364,931.52
  4. Step 4: Simplify right side
    666,744x = 335,779,096,900.15
  5. Step 5: Solve for x
    x = 335,779,096,900.15/666,744
  6. Step 6: Final answer
    x = 503,610.23

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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.