Home / 3,178,688.60-4,768,032.90-1,981,962.20

Finding the Fourth Proportional to 3,178,688.60, 4,768,032.90 and 1,981,962.20

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Solution

The fourth proportional to 3,178,688.60, 4,768,032.90 and 1,981,962.20 is: 2,972,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,688.60 : 4,768,032.90 = 1,981,962.20 : x
  2. Step 2: Convert to fraction form
    3,178,688.60/4,768,032.90 = 1,981,962.20/x
  3. Step 3: Cross multiply
    3,178,688.60x = 4,768,032.90 × 1,981,962.20
  4. Step 4: Simplify right side
    3,178,688.60x = 9,450,060,976,156.38
  5. Step 5: Solve for x
    x = 9,450,060,976,156.38/3,178,688.60
  6. Step 6: Final answer
    x = 2,972,943.30

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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.