Home / 1,124,488.40-1,687,510.20-809,171.60

Finding the Fourth Proportional to 1,124,488.40, 1,687,510.20 and 809,171.60

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Solution

The fourth proportional to 1,124,488.40, 1,687,510.20 and 809,171.60 is: 1,214,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,488.40 : 1,687,510.20 = 809,171.60 : x
  2. Step 2: Convert to fraction form
    1,124,488.40/1,687,510.20 = 809,171.60/x
  3. Step 3: Cross multiply
    1,124,488.40x = 1,687,510.20 × 809,171.60
  4. Step 4: Simplify right side
    1,124,488.40x = 1,365,485,328,550.32
  5. Step 5: Solve for x
    x = 1,365,485,328,550.32/1,124,488.40
  6. Step 6: Final answer
    x = 1,214,316.95

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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.