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Finding the Fourth Proportional to 7,258,989.60, 10,891,983.60 and 5,124,477.60

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Solution

The fourth proportional to 7,258,989.60, 10,891,983.60 and 5,124,477.60 is: 7,689,186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,258,989.60 : 10,891,983.60 = 5,124,477.60 : x
  2. Step 2: Convert to fraction form
    7,258,989.60/10,891,983.60 = 5,124,477.60/x
  3. Step 3: Cross multiply
    7,258,989.60x = 10,891,983.60 × 5,124,477.60
  4. Step 4: Simplify right side
    7,258,989.60x = 55,815,725,977,767.35
  5. Step 5: Solve for x
    x = 55,815,725,977,767.35/7,258,989.60
  6. Step 6: Final answer
    x = 7,689,186.66

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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.