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Finding the Fourth Proportional to 518,041.78, 714,708.02 and 313,945.46

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Solution

The fourth proportional to 518,041.78, 714,708.02 and 313,945.46 is: 433,129.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,041.78 : 714,708.02 = 313,945.46 : x
  2. Step 2: Convert to fraction form
    518,041.78/714,708.02 = 313,945.46/x
  3. Step 3: Cross multiply
    518,041.78x = 714,708.02 × 313,945.46
  4. Step 4: Simplify right side
    518,041.78x = 224,379,336,534.86
  5. Step 5: Solve for x
    x = 224,379,336,534.86/518,041.78
  6. Step 6: Final answer
    x = 433,129.81

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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.