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Finding the Fourth Proportional to 680,873.70, 1,021,310.55 and 470,921.70

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Solution

The fourth proportional to 680,873.70, 1,021,310.55 and 470,921.70 is: 706,382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,873.70 : 1,021,310.55 = 470,921.70 : x
  2. Step 2: Convert to fraction form
    680,873.70/1,021,310.55 = 470,921.70/x
  3. Step 3: Cross multiply
    680,873.70x = 1,021,310.55 × 470,921.70
  4. Step 4: Simplify right side
    680,873.70x = 480,957,300,433.94
  5. Step 5: Solve for x
    x = 480,957,300,433.94/680,873.70
  6. Step 6: Final answer
    x = 706,382.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.