Home / 509,121.75-702,588.02-282,788.31

Finding the Fourth Proportional to 509,121.75, 702,588.02 and 282,788.31

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Solution

The fourth proportional to 509,121.75, 702,588.02 and 282,788.31 is: 390,247.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,121.75 : 702,588.02 = 282,788.31 : x
  2. Step 2: Convert to fraction form
    509,121.75/702,588.02 = 282,788.31/x
  3. Step 3: Cross multiply
    509,121.75x = 702,588.02 × 282,788.31
  4. Step 4: Simplify right side
    509,121.75x = 198,683,677,388.11
  5. Step 5: Solve for x
    x = 198,683,677,388.11/509,121.75
  6. Step 6: Final answer
    x = 390,247.87

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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.