Home / 912,460.80-1,368,561.60-313,449.60

Finding the Fourth Proportional to 912,460.80, 1,368,561.60 and 313,449.60

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Solution

The fourth proportional to 912,460.80, 1,368,561.60 and 313,449.60 is: 470,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,460.80 : 1,368,561.60 = 313,449.60 : x
  2. Step 2: Convert to fraction form
    912,460.80/1,368,561.60 = 313,449.60/x
  3. Step 3: Cross multiply
    912,460.80x = 1,368,561.60 × 313,449.60
  4. Step 4: Simplify right side
    912,460.80x = 428,975,086,095.36
  5. Step 5: Solve for x
    x = 428,975,086,095.36/912,460.80
  6. Step 6: Final answer
    x = 470,129.88

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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.