Home / 528,522.12-729,361.02-302,172.36

Finding the Fourth Proportional to 528,522.12, 729,361.02 and 302,172.36

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Solution

The fourth proportional to 528,522.12, 729,361.02 and 302,172.36 is: 416,998.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,522.12 : 729,361.02 = 302,172.36 : x
  2. Step 2: Convert to fraction form
    528,522.12/729,361.02 = 302,172.36/x
  3. Step 3: Cross multiply
    528,522.12x = 729,361.02 × 302,172.36
  4. Step 4: Simplify right side
    528,522.12x = 220,392,740,705.41
  5. Step 5: Solve for x
    x = 220,392,740,705.41/528,522.12
  6. Step 6: Final answer
    x = 416,998.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.