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Finding the Fourth Proportional to 666,779.04, 1,000,200.78 and 217,499.04

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Solution

The fourth proportional to 666,779.04, 1,000,200.78 and 217,499.04 is: 326,259.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,779.04 : 1,000,200.78 = 217,499.04 : x
  2. Step 2: Convert to fraction form
    666,779.04/1,000,200.78 = 217,499.04/x
  3. Step 3: Cross multiply
    666,779.04x = 1,000,200.78 × 217,499.04
  4. Step 4: Simplify right side
    666,779.04x = 217,542,709,457.25
  5. Step 5: Solve for x
    x = 217,542,709,457.25/666,779.04
  6. Step 6: Final answer
    x = 326,259.07

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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.