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Finding the Fourth Proportional to 680,995.54, 939,816.53 and 375,071.86

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Solution

The fourth proportional to 680,995.54, 939,816.53 and 375,071.86 is: 517,622.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,995.54 : 939,816.53 = 375,071.86 : x
  2. Step 2: Convert to fraction form
    680,995.54/939,816.53 = 375,071.86/x
  3. Step 3: Cross multiply
    680,995.54x = 939,816.53 × 375,071.86
  4. Step 4: Simplify right side
    680,995.54x = 352,498,733,965.85
  5. Step 5: Solve for x
    x = 352,498,733,965.85/680,995.54
  6. Step 6: Final answer
    x = 517,622.68

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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.