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Finding the Fourth Proportional to 496,653.08, 685,453.48 and 278,886.20

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Solution

The fourth proportional to 496,653.08, 685,453.48 and 278,886.20 is: 384,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,653.08 : 685,453.48 = 278,886.20 : x
  2. Step 2: Convert to fraction form
    496,653.08/685,453.48 = 278,886.20/x
  3. Step 3: Cross multiply
    496,653.08x = 685,453.48 × 278,886.20
  4. Step 4: Simplify right side
    496,653.08x = 191,163,516,313.98
  5. Step 5: Solve for x
    x = 191,163,516,313.98/496,653.08
  6. Step 6: Final answer
    x = 384,903.52

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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.