Home / 678,013,450.60-1,017,023,604.38-211,635,779.88

Finding the Fourth Proportional to 678,013,450.60, 1,017,023,604.38 and 211,635,779.88

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Solution

The fourth proportional to 678,013,450.60, 1,017,023,604.38 and 211,635,779.88 is: 317,454,739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,013,450.60 : 1,017,023,604.38 = 211,635,779.88 : x
  2. Step 2: Convert to fraction form
    678,013,450.60/1,017,023,604.38 = 211,635,779.88/x
  3. Step 3: Cross multiply
    678,013,450.60x = 1,017,023,604.38 × 211,635,779.88
  4. Step 4: Simplify right side
    678,013,450.60x = 215,238,583,669,329,888
  5. Step 5: Solve for x
    x = 215,238,583,669,329,888/678,013,450.60
  6. Step 6: Final answer
    x = 317,454,739.99

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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.