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Finding the Fourth Proportional to 978,136.33, 1,466,924.07 and 329,641.89

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Solution

The fourth proportional to 978,136.33, 1,466,924.07 and 329,641.89 is: 494,368.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,136.33 : 1,466,924.07 = 329,641.89 : x
  2. Step 2: Convert to fraction form
    978,136.33/1,466,924.07 = 329,641.89/x
  3. Step 3: Cross multiply
    978,136.33x = 1,466,924.07 × 329,641.89
  4. Step 4: Simplify right side
    978,136.33x = 483,559,622,921.29
  5. Step 5: Solve for x
    x = 483,559,622,921.29/978,136.33
  6. Step 6: Final answer
    x = 494,368.33

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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.