Home / 378,378.30-522,499.59-360,453.18

Finding the Fourth Proportional to 378,378.30, 522,499.59 and 360,453.18

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Solution

The fourth proportional to 378,378.30, 522,499.59 and 360,453.18 is: 497,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,378.30 : 522,499.59 = 360,453.18 : x
  2. Step 2: Convert to fraction form
    378,378.30/522,499.59 = 360,453.18/x
  3. Step 3: Cross multiply
    378,378.30x = 522,499.59 × 360,453.18
  4. Step 4: Simplify right side
    378,378.30x = 188,336,638,764.20
  5. Step 5: Solve for x
    x = 188,336,638,764.20/378,378.30
  6. Step 6: Final answer
    x = 497,746.93

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1.5x scale

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.