Home / 913,105.54-1,369,845.11-313,988.86

Finding the Fourth Proportional to 913,105.54, 1,369,845.11 and 313,988.86

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Solution

The fourth proportional to 913,105.54, 1,369,845.11 and 313,988.86 is: 471,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,105.54 : 1,369,845.11 = 313,988.86 : x
  2. Step 2: Convert to fraction form
    913,105.54/1,369,845.11 = 313,988.86/x
  3. Step 3: Cross multiply
    913,105.54x = 1,369,845.11 × 313,988.86
  4. Step 4: Simplify right side
    913,105.54x = 430,116,104,465.48
  5. Step 5: Solve for x
    x = 430,116,104,465.48/913,105.54
  6. Step 6: Final answer
    x = 471,047.52

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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.