Home / 991,756.80-1,487,635.20-317,836.80

Finding the Fourth Proportional to 991,756.80, 1,487,635.20 and 317,836.80

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Solution

The fourth proportional to 991,756.80, 1,487,635.20 and 317,836.80 is: 476,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,756.80 : 1,487,635.20 = 317,836.80 : x
  2. Step 2: Convert to fraction form
    991,756.80/1,487,635.20 = 317,836.80/x
  3. Step 3: Cross multiply
    991,756.80x = 1,487,635.20 × 317,836.80
  4. Step 4: Simplify right side
    991,756.80x = 472,825,211,535.36
  5. Step 5: Solve for x
    x = 472,825,211,535.36/991,756.80
  6. Step 6: Final answer
    x = 476,755.20

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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.