Home / 7,128,749.40-10,685,250.90-3,936,166.80

Finding the Fourth Proportional to 7,128,749.40, 10,685,250.90 and 3,936,166.80

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Solution

The fourth proportional to 7,128,749.40, 10,685,250.90 and 3,936,166.80 is: 5,899,902.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,749.40 : 10,685,250.90 = 3,936,166.80 : x
  2. Step 2: Convert to fraction form
    7,128,749.40/10,685,250.90 = 3,936,166.80/x
  3. Step 3: Cross multiply
    7,128,749.40x = 10,685,250.90 × 3,936,166.80
  4. Step 4: Simplify right side
    7,128,749.40x = 42,058,929,842,250.12
  5. Step 5: Solve for x
    x = 42,058,929,842,250.12/7,128,749.40
  6. Step 6: Final answer
    x = 5,899,902.98

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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.