Home / 915,911.34-1,263,906.04-507,983.89

Finding the Fourth Proportional to 915,911.34, 1,263,906.04 and 507,983.89

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Solution

The fourth proportional to 915,911.34, 1,263,906.04 and 507,983.89 is: 700,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,911.34 : 1,263,906.04 = 507,983.89 : x
  2. Step 2: Convert to fraction form
    915,911.34/1,263,906.04 = 507,983.89/x
  3. Step 3: Cross multiply
    915,911.34x = 1,263,906.04 × 507,983.89
  4. Step 4: Simplify right side
    915,911.34x = 642,043,906,793.70
  5. Step 5: Solve for x
    x = 642,043,906,793.70/915,911.34
  6. Step 6: Final answer
    x = 700,989.14

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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.