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Finding the Fourth Proportional to 680,790.68, 939,498.12 and 374,895.50

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Solution

The fourth proportional to 680,790.68, 939,498.12 and 374,895.50 is: 517,359.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,790.68 : 939,498.12 = 374,895.50 : x
  2. Step 2: Convert to fraction form
    680,790.68/939,498.12 = 374,895.50/x
  3. Step 3: Cross multiply
    680,790.68x = 939,498.12 × 374,895.50
  4. Step 4: Simplify right side
    680,790.68x = 352,213,617,446.46
  5. Step 5: Solve for x
    x = 352,213,617,446.46/680,790.68
  6. Step 6: Final answer
    x = 517,359.63

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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.