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Finding the Fourth Proportional to 666,565.96, 919,862.58 and 364,779.40

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Solution

The fourth proportional to 666,565.96, 919,862.58 and 364,779.40 is: 503,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,565.96 : 919,862.58 = 364,779.40 : x
  2. Step 2: Convert to fraction form
    666,565.96/919,862.58 = 364,779.40/x
  3. Step 3: Cross multiply
    666,565.96x = 919,862.58 × 364,779.40
  4. Step 4: Simplify right side
    666,565.96x = 335,546,920,014.85
  5. Step 5: Solve for x
    x = 335,546,920,014.85/666,565.96
  6. Step 6: Final answer
    x = 503,396.42

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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.