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Finding the Fourth Proportional to 640,971.84, 960,779.79 and 241,439.75

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Solution

The fourth proportional to 640,971.84, 960,779.79 and 241,439.75 is: 361,904.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,971.84 : 960,779.79 = 241,439.75 : x
  2. Step 2: Convert to fraction form
    640,971.84/960,779.79 = 241,439.75/x
  3. Step 3: Cross multiply
    640,971.84x = 960,779.79 × 241,439.75
  4. Step 4: Simplify right side
    640,971.84x = 231,970,427,498.75
  5. Step 5: Solve for x
    x = 231,970,427,498.75/640,971.84
  6. Step 6: Final answer
    x = 361,904.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.