Home / 1,137,968.20-1,707,206.56-428,002.40

Finding the Fourth Proportional to 1,137,968.20, 1,707,206.56 and 428,002.40

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Solution

The fourth proportional to 1,137,968.20, 1,707,206.56 and 428,002.40 is: 642,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,968.20 : 1,707,206.56 = 428,002.40 : x
  2. Step 2: Convert to fraction form
    1,137,968.20/1,707,206.56 = 428,002.40/x
  3. Step 3: Cross multiply
    1,137,968.20x = 1,707,206.56 × 428,002.40
  4. Step 4: Simplify right side
    1,137,968.20x = 730,688,504,975.74
  5. Step 5: Solve for x
    x = 730,688,504,975.74/1,137,968.20
  6. Step 6: Final answer
    x = 642,099.23

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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.