Home / 709,880.52-979,621.98-403,950.12

Finding the Fourth Proportional to 709,880.52, 979,621.98 and 403,950.12

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Solution

The fourth proportional to 709,880.52, 979,621.98 and 403,950.12 is: 557,443.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,880.52 : 979,621.98 = 403,950.12 : x
  2. Step 2: Convert to fraction form
    709,880.52/979,621.98 = 403,950.12/x
  3. Step 3: Cross multiply
    709,880.52x = 979,621.98 × 403,950.12
  4. Step 4: Simplify right side
    709,880.52x = 395,718,416,375.64
  5. Step 5: Solve for x
    x = 395,718,416,375.64/709,880.52
  6. Step 6: Final answer
    x = 557,443.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.