Home / 1,391,605.20-2,087,407.80-831,733.20

Finding the Fourth Proportional to 1,391,605.20, 2,087,407.80 and 831,733.20

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Solution

The fourth proportional to 1,391,605.20, 2,087,407.80 and 831,733.20 is: 1,247,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,605.20 : 2,087,407.80 = 831,733.20 : x
  2. Step 2: Convert to fraction form
    1,391,605.20/2,087,407.80 = 831,733.20/x
  3. Step 3: Cross multiply
    1,391,605.20x = 2,087,407.80 × 831,733.20
  4. Step 4: Simplify right side
    1,391,605.20x = 1,736,166,369,198.96
  5. Step 5: Solve for x
    x = 1,736,166,369,198.96/1,391,605.20
  6. Step 6: Final answer
    x = 1,247,599.80

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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.