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Finding the Fourth Proportional to 680,995.82, 939,780.77 and 375,079.14

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Solution

The fourth proportional to 680,995.82, 939,780.77 and 375,079.14 is: 517,612.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,995.82 : 939,780.77 = 375,079.14 : x
  2. Step 2: Convert to fraction form
    680,995.82/939,780.77 = 375,079.14/x
  3. Step 3: Cross multiply
    680,995.82x = 939,780.77 × 375,079.14
  4. Step 4: Simplify right side
    680,995.82x = 352,492,161,124.74
  5. Step 5: Solve for x
    x = 352,492,161,124.74/680,995.82
  6. Step 6: Final answer
    x = 517,612.81

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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.