Home / 3,987,430.65-5,980,855.79-1,558,128.87

Finding the Fourth Proportional to 3,987,430.65, 5,980,855.79 and 1,558,128.87

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Solution

The fourth proportional to 3,987,430.65, 5,980,855.79 and 1,558,128.87 is: 2,337,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,430.65 : 5,980,855.79 = 1,558,128.87 : x
  2. Step 2: Convert to fraction form
    3,987,430.65/5,980,855.79 = 1,558,128.87/x
  3. Step 3: Cross multiply
    3,987,430.65x = 5,980,855.79 × 1,558,128.87
  4. Step 4: Simplify right side
    3,987,430.65x = 9,318,944,077,600.98
  5. Step 5: Solve for x
    x = 9,318,944,077,600.98/3,987,430.65
  6. Step 6: Final answer
    x = 2,337,079.91

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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.