Home / 763,396.40-1,145,094.60-687,288.80

Finding the Fourth Proportional to 763,396.40, 1,145,094.60 and 687,288.80

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Solution

The fourth proportional to 763,396.40, 1,145,094.60 and 687,288.80 is: 1,030,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,396.40 : 1,145,094.60 = 687,288.80 : x
  2. Step 2: Convert to fraction form
    763,396.40/1,145,094.60 = 687,288.80/x
  3. Step 3: Cross multiply
    763,396.40x = 1,145,094.60 × 687,288.80
  4. Step 4: Simplify right side
    763,396.40x = 787,010,693,520.48
  5. Step 5: Solve for x
    x = 787,010,693,520.48/763,396.40
  6. Step 6: Final answer
    x = 1,030,933.20

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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.