Home / 762,406.68-1,143,172.48-288,789.96

Finding the Fourth Proportional to 762,406.68, 1,143,172.48 and 288,789.96

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Solution

The fourth proportional to 762,406.68, 1,143,172.48 and 288,789.96 is: 433,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,406.68 : 1,143,172.48 = 288,789.96 : x
  2. Step 2: Convert to fraction form
    762,406.68/1,143,172.48 = 288,789.96/x
  3. Step 3: Cross multiply
    762,406.68x = 1,143,172.48 × 288,789.96
  4. Step 4: Simplify right side
    762,406.68x = 330,136,734,772.30
  5. Step 5: Solve for x
    x = 330,136,734,772.30/762,406.68
  6. Step 6: Final answer
    x = 433,019.21

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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.