Home / 870,111.20-1,303,438.80-766,200.80

Finding the Fourth Proportional to 870,111.20, 1,303,438.80 and 766,200.80

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Solution

The fourth proportional to 870,111.20, 1,303,438.80 and 766,200.80 is: 1,147,779.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,111.20 : 1,303,438.80 = 766,200.80 : x
  2. Step 2: Convert to fraction form
    870,111.20/1,303,438.80 = 766,200.80/x
  3. Step 3: Cross multiply
    870,111.20x = 1,303,438.80 × 766,200.80
  4. Step 4: Simplify right side
    870,111.20x = 998,695,851,311.04
  5. Step 5: Solve for x
    x = 998,695,851,311.04/870,111.20
  6. Step 6: Final answer
    x = 1,147,779.56

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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.