Home / 867,121.80-1,300,682.70-831,692.40

Finding the Fourth Proportional to 867,121.80, 1,300,682.70 and 831,692.40

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Solution

The fourth proportional to 867,121.80, 1,300,682.70 and 831,692.40 is: 1,247,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,121.80 : 1,300,682.70 = 831,692.40 : x
  2. Step 2: Convert to fraction form
    867,121.80/1,300,682.70 = 831,692.40/x
  3. Step 3: Cross multiply
    867,121.80x = 1,300,682.70 × 831,692.40
  4. Step 4: Simplify right side
    867,121.80x = 1,081,767,916,401.48
  5. Step 5: Solve for x
    x = 1,081,767,916,401.48/867,121.80
  6. Step 6: Final answer
    x = 1,247,538.60

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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.