Home / 1,131,402.25-1,698,218.73-831,039.67

Finding the Fourth Proportional to 1,131,402.25, 1,698,218.73 and 831,039.67

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Solution

The fourth proportional to 1,131,402.25, 1,698,218.73 and 831,039.67 is: 1,247,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,402.25 : 1,698,218.73 = 831,039.67 : x
  2. Step 2: Convert to fraction form
    1,131,402.25/1,698,218.73 = 831,039.67/x
  3. Step 3: Cross multiply
    1,131,402.25x = 1,698,218.73 × 831,039.67
  4. Step 4: Simplify right side
    1,131,402.25x = 1,411,287,132,967.02
  5. Step 5: Solve for x
    x = 1,411,287,132,967.02/1,131,402.25
  6. Step 6: Final answer
    x = 1,247,378.76

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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.