Home / 287,313,869.38-430,970,809.71-68,964,211.42

Finding the Fourth Proportional to 287,313,869.38, 430,970,809.71 and 68,964,211.42

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Solution

The fourth proportional to 287,313,869.38, 430,970,809.71 and 68,964,211.42 is: 103,446,318.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,313,869.38 : 430,970,809.71 = 68,964,211.42 : x
  2. Step 2: Convert to fraction form
    287,313,869.38/430,970,809.71 = 68,964,211.42/x
  3. Step 3: Cross multiply
    287,313,869.38x = 430,970,809.71 × 68,964,211.42
  4. Step 4: Simplify right side
    287,313,869.38x = 29,721,562,036,689,028
  5. Step 5: Solve for x
    x = 29,721,562,036,689,028/287,313,869.38
  6. Step 6: Final answer
    x = 103,446,318.48

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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.