Home / 742,021.65-1,111,720.28-629,172.45

Finding the Fourth Proportional to 742,021.65, 1,111,720.28 and 629,172.45

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Solution

The fourth proportional to 742,021.65, 1,111,720.28 and 629,172.45 is: 942,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,021.65 : 1,111,720.28 = 629,172.45 : x
  2. Step 2: Convert to fraction form
    742,021.65/1,111,720.28 = 629,172.45/x
  3. Step 3: Cross multiply
    742,021.65x = 1,111,720.28 × 629,172.45
  4. Step 4: Simplify right side
    742,021.65x = 699,463,769,136.42
  5. Step 5: Solve for x
    x = 699,463,769,136.42/742,021.65
  6. Step 6: Final answer
    x = 942,646.04

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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.