Home / 863,540.40-1,294,144.20-578,420.40

Finding the Fourth Proportional to 863,540.40, 1,294,144.20 and 578,420.40

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Solution

The fourth proportional to 863,540.40, 1,294,144.20 and 578,420.40 is: 866,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,540.40 : 1,294,144.20 = 578,420.40 : x
  2. Step 2: Convert to fraction form
    863,540.40/1,294,144.20 = 578,420.40/x
  3. Step 3: Cross multiply
    863,540.40x = 1,294,144.20 × 578,420.40
  4. Step 4: Simplify right side
    863,540.40x = 748,559,405,821.68
  5. Step 5: Solve for x
    x = 748,559,405,821.68/863,540.40
  6. Step 6: Final answer
    x = 866,849.32

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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.