Home / 742,081.20-1,113,121.80-343,500.45

Finding the Fourth Proportional to 742,081.20, 1,113,121.80 and 343,500.45

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Solution

The fourth proportional to 742,081.20, 1,113,121.80 and 343,500.45 is: 515,250.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,081.20 : 1,113,121.80 = 343,500.45 : x
  2. Step 2: Convert to fraction form
    742,081.20/1,113,121.80 = 343,500.45/x
  3. Step 3: Cross multiply
    742,081.20x = 1,113,121.80 × 343,500.45
  4. Step 4: Simplify right side
    742,081.20x = 382,357,839,204.81
  5. Step 5: Solve for x
    x = 382,357,839,204.81/742,081.20
  6. Step 6: Final answer
    x = 515,250.68

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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.