Home / 769,830.40-1,154,131.20-326,233.60

Finding the Fourth Proportional to 769,830.40, 1,154,131.20 and 326,233.60

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Solution

The fourth proportional to 769,830.40, 1,154,131.20 and 326,233.60 is: 489,090.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,830.40 : 1,154,131.20 = 326,233.60 : x
  2. Step 2: Convert to fraction form
    769,830.40/1,154,131.20 = 326,233.60/x
  3. Step 3: Cross multiply
    769,830.40x = 1,154,131.20 × 326,233.60
  4. Step 4: Simplify right side
    769,830.40x = 376,516,376,248.32
  5. Step 5: Solve for x
    x = 376,516,376,248.32/769,830.40
  6. Step 6: Final answer
    x = 489,090.03

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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.