Home / 980,155.80-1,470,437.76-306,209.88

Finding the Fourth Proportional to 980,155.80, 1,470,437.76 and 306,209.88

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Solution

The fourth proportional to 980,155.80, 1,470,437.76 and 306,209.88 is: 459,378.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,155.80 : 1,470,437.76 = 306,209.88 : x
  2. Step 2: Convert to fraction form
    980,155.80/1,470,437.76 = 306,209.88/x
  3. Step 3: Cross multiply
    980,155.80x = 1,470,437.76 × 306,209.88
  4. Step 4: Simplify right side
    980,155.80x = 450,262,570,037.07
  5. Step 5: Solve for x
    x = 450,262,570,037.07/980,155.80
  6. Step 6: Final answer
    x = 459,378.57

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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.