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Finding the Fourth Proportional to 644,095.32, 888,879.32 and 357,615.40

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Solution

The fourth proportional to 644,095.32, 888,879.32 and 357,615.40 is: 493,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,095.32 : 888,879.32 = 357,615.40 : x
  2. Step 2: Convert to fraction form
    644,095.32/888,879.32 = 357,615.40/x
  3. Step 3: Cross multiply
    644,095.32x = 888,879.32 × 357,615.40
  4. Step 4: Simplify right side
    644,095.32x = 317,876,933,573.53
  5. Step 5: Solve for x
    x = 317,876,933,573.53/644,095.32
  6. Step 6: Final answer
    x = 493,524.68

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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.