Home / 912,289.80-1,368,305.10-313,278.60

Finding the Fourth Proportional to 912,289.80, 1,368,305.10 and 313,278.60

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Solution

The fourth proportional to 912,289.80, 1,368,305.10 and 313,278.60 is: 469,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,289.80 : 1,368,305.10 = 313,278.60 : x
  2. Step 2: Convert to fraction form
    912,289.80/1,368,305.10 = 313,278.60/x
  3. Step 3: Cross multiply
    912,289.80x = 1,368,305.10 × 313,278.60
  4. Step 4: Simplify right side
    912,289.80x = 428,660,706,100.86
  5. Step 5: Solve for x
    x = 428,660,706,100.86/912,289.80
  6. Step 6: Final answer
    x = 469,873.40

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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.