Home / 1,016,999.20-1,525,498.80-780,803.20

Finding the Fourth Proportional to 1,016,999.20, 1,525,498.80 and 780,803.20

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Solution

The fourth proportional to 1,016,999.20, 1,525,498.80 and 780,803.20 is: 1,171,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016,999.20 : 1,525,498.80 = 780,803.20 : x
  2. Step 2: Convert to fraction form
    1,016,999.20/1,525,498.80 = 780,803.20/x
  3. Step 3: Cross multiply
    1,016,999.20x = 1,525,498.80 × 780,803.20
  4. Step 4: Simplify right side
    1,016,999.20x = 1,191,114,344,636.16
  5. Step 5: Solve for x
    x = 1,191,114,344,636.16/1,016,999.20
  6. Step 6: Final answer
    x = 1,171,204.80

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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.