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Finding the Fourth Proportional to 680,730.87, 939,400.85 and 374,801.01

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Solution

The fourth proportional to 680,730.87, 939,400.85 and 374,801.01 is: 517,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,730.87 : 939,400.85 = 374,801.01 : x
  2. Step 2: Convert to fraction form
    680,730.87/939,400.85 = 374,801.01/x
  3. Step 3: Cross multiply
    680,730.87x = 939,400.85 × 374,801.01
  4. Step 4: Simplify right side
    680,730.87x = 352,088,385,500.85
  5. Step 5: Solve for x
    x = 352,088,385,500.85/680,730.87
  6. Step 6: Final answer
    x = 517,221.12

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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.