Home / 938,629.90-1,408,085.35-339,731.18

Finding the Fourth Proportional to 938,629.90, 1,408,085.35 and 339,731.18

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Solution

The fourth proportional to 938,629.90, 1,408,085.35 and 339,731.18 is: 509,647.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,629.90 : 1,408,085.35 = 339,731.18 : x
  2. Step 2: Convert to fraction form
    938,629.90/1,408,085.35 = 339,731.18/x
  3. Step 3: Cross multiply
    938,629.90x = 1,408,085.35 × 339,731.18
  4. Step 4: Simplify right side
    938,629.90x = 478,370,499,051.31
  5. Step 5: Solve for x
    x = 478,370,499,051.31/938,629.90
  6. Step 6: Final answer
    x = 509,647.63

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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.