Home / 738,420.56-1,109,942.91-487,314.68

Finding the Fourth Proportional to 738,420.56, 1,109,942.91 and 487,314.68

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Solution

The fourth proportional to 738,420.56, 1,109,942.91 and 487,314.68 is: 732,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,420.56 : 1,109,942.91 = 487,314.68 : x
  2. Step 2: Convert to fraction form
    738,420.56/1,109,942.91 = 487,314.68/x
  3. Step 3: Cross multiply
    738,420.56x = 1,109,942.91 × 487,314.68
  4. Step 4: Simplify right side
    738,420.56x = 540,891,468,455.20
  5. Step 5: Solve for x
    x = 540,891,468,455.20/738,420.56
  6. Step 6: Final answer
    x = 732,497.85

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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.