Home / 1,273,222.40-1,909,833.60-386,643.20

Finding the Fourth Proportional to 1,273,222.40, 1,909,833.60 and 386,643.20

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Solution

The fourth proportional to 1,273,222.40, 1,909,833.60 and 386,643.20 is: 579,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,222.40 : 1,909,833.60 = 386,643.20 : x
  2. Step 2: Convert to fraction form
    1,273,222.40/1,909,833.60 = 386,643.20/x
  3. Step 3: Cross multiply
    1,273,222.40x = 1,909,833.60 × 386,643.20
  4. Step 4: Simplify right side
    1,273,222.40x = 738,424,174,571.52
  5. Step 5: Solve for x
    x = 738,424,174,571.52/1,273,222.40
  6. Step 6: Final answer
    x = 579,964.80

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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.