Home / 912,440.80-1,368,531.60-313,429.60

Finding the Fourth Proportional to 912,440.80, 1,368,531.60 and 313,429.60

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Solution

The fourth proportional to 912,440.80, 1,368,531.60 and 313,429.60 is: 470,099.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,440.80 : 1,368,531.60 = 313,429.60 : x
  2. Step 2: Convert to fraction form
    912,440.80/1,368,531.60 = 313,429.60/x
  3. Step 3: Cross multiply
    912,440.80x = 1,368,531.60 × 313,429.60
  4. Step 4: Simplify right side
    912,440.80x = 428,938,311,975.36
  5. Step 5: Solve for x
    x = 428,938,311,975.36/912,440.80
  6. Step 6: Final answer
    x = 470,099.88

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1.5x scale

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.