Home / 7,983,779.05-11,975,667.32-1,918,510.78

Finding the Fourth Proportional to 7,983,779.05, 11,975,667.32 and 1,918,510.78

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Solution

The fourth proportional to 7,983,779.05, 11,975,667.32 and 1,918,510.78 is: 2,877,765.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983,779.05 : 11,975,667.32 = 1,918,510.78 : x
  2. Step 2: Convert to fraction form
    7,983,779.05/11,975,667.32 = 1,918,510.78/x
  3. Step 3: Cross multiply
    7,983,779.05x = 11,975,667.32 × 1,918,510.78
  4. Step 4: Simplify right side
    7,983,779.05x = 22,975,446,859,870.52
  5. Step 5: Solve for x
    x = 22,975,446,859,870.52/7,983,779.05
  6. Step 6: Final answer
    x = 2,877,765.87

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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.