Home / 5,315,145.56-7,973,985.49-1,720,913.60

Finding the Fourth Proportional to 5,315,145.56, 7,973,985.49 and 1,720,913.60

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Solution

The fourth proportional to 5,315,145.56, 7,973,985.49 and 1,720,913.60 is: 2,581,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315,145.56 : 7,973,985.49 = 1,720,913.60 : x
  2. Step 2: Convert to fraction form
    5,315,145.56/7,973,985.49 = 1,720,913.60/x
  3. Step 3: Cross multiply
    5,315,145.56x = 7,973,985.49 × 1,720,913.60
  4. Step 4: Simplify right side
    5,315,145.56x = 13,722,540,031,771.45
  5. Step 5: Solve for x
    x = 13,722,540,031,771.45/5,315,145.56
  6. Step 6: Final answer
    x = 2,581,780.66

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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.