Home / 8,979,898.20-12,392,270.73-5,112,419.28

Finding the Fourth Proportional to 8,979,898.20, 12,392,270.73 and 5,112,419.28

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Solution

The fourth proportional to 8,979,898.20, 12,392,270.73 and 5,112,419.28 is: 7,055,144.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979,898.20 : 12,392,270.73 = 5,112,419.28 : x
  2. Step 2: Convert to fraction form
    8,979,898.20/12,392,270.73 = 5,112,419.28/x
  3. Step 3: Cross multiply
    8,979,898.20x = 12,392,270.73 × 5,112,419.28
  4. Step 4: Simplify right side
    8,979,898.20x = 63,354,483,803,031.68
  5. Step 5: Solve for x
    x = 63,354,483,803,031.68/8,979,898.20
  6. Step 6: Final answer
    x = 7,055,144.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.