Home / 1,262,407.20-1,893,620.40-420,957.60

Finding the Fourth Proportional to 1,262,407.20, 1,893,620.40 and 420,957.60

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Solution

The fourth proportional to 1,262,407.20, 1,893,620.40 and 420,957.60 is: 631,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,407.20 : 1,893,620.40 = 420,957.60 : x
  2. Step 2: Convert to fraction form
    1,262,407.20/1,893,620.40 = 420,957.60/x
  3. Step 3: Cross multiply
    1,262,407.20x = 1,893,620.40 × 420,957.60
  4. Step 4: Simplify right side
    1,262,407.20x = 797,133,898,895.04
  5. Step 5: Solve for x
    x = 797,133,898,895.04/1,262,407.20
  6. Step 6: Final answer
    x = 631,439.60

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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.