Home / 1,209,969.20-1,814,953.80-1,079,332.40

Finding the Fourth Proportional to 1,209,969.20, 1,814,953.80 and 1,079,332.40

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Solution

The fourth proportional to 1,209,969.20, 1,814,953.80 and 1,079,332.40 is: 1,618,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,969.20 : 1,814,953.80 = 1,079,332.40 : x
  2. Step 2: Convert to fraction form
    1,209,969.20/1,814,953.80 = 1,079,332.40/x
  3. Step 3: Cross multiply
    1,209,969.20x = 1,814,953.80 × 1,079,332.40
  4. Step 4: Simplify right side
    1,209,969.20x = 1,958,938,440,843.12
  5. Step 5: Solve for x
    x = 1,958,938,440,843.12/1,209,969.20
  6. Step 6: Final answer
    x = 1,618,998.60

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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.