Home / 287,080,870.20-430,579,314.90-82,587,622.20

Finding the Fourth Proportional to 287,080,870.20, 430,579,314.90 and 82,587,622.20

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Solution

The fourth proportional to 287,080,870.20, 430,579,314.90 and 82,587,622.20 is: 123,869,353.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,080,870.20 : 430,579,314.90 = 82,587,622.20 : x
  2. Step 2: Convert to fraction form
    287,080,870.20/430,579,314.90 = 82,587,622.20/x
  3. Step 3: Cross multiply
    287,080,870.20x = 430,579,314.90 × 82,587,622.20
  4. Step 4: Simplify right side
    287,080,870.20x = 35,560,521,786,096,032
  5. Step 5: Solve for x
    x = 35,560,521,786,096,032/287,080,870.20
  6. Step 6: Final answer
    x = 123,869,353.47

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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.