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Finding the Fourth Proportional to 718,848.86, 992,012.46 and 396,558.32

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Solution

The fourth proportional to 718,848.86, 992,012.46 and 396,558.32 is: 547,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,848.86 : 992,012.46 = 396,558.32 : x
  2. Step 2: Convert to fraction form
    718,848.86/992,012.46 = 396,558.32/x
  3. Step 3: Cross multiply
    718,848.86x = 992,012.46 × 396,558.32
  4. Step 4: Simplify right side
    718,848.86x = 393,390,794,556.67
  5. Step 5: Solve for x
    x = 393,390,794,556.67/718,848.86
  6. Step 6: Final answer
    x = 547,251.05

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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.