Home / 876,616.40-1,312,300.20-521,447.60

Finding the Fourth Proportional to 876,616.40, 1,312,300.20 and 521,447.60

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Solution

The fourth proportional to 876,616.40, 1,312,300.20 and 521,447.60 is: 780,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,616.40 : 1,312,300.20 = 521,447.60 : x
  2. Step 2: Convert to fraction form
    876,616.40/1,312,300.20 = 521,447.60/x
  3. Step 3: Cross multiply
    876,616.40x = 1,312,300.20 × 521,447.60
  4. Step 4: Simplify right side
    876,616.40x = 684,295,789,769.52
  5. Step 5: Solve for x
    x = 684,295,789,769.52/876,616.40
  6. Step 6: Final answer
    x = 780,610.30

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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.