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Finding the Fourth Proportional to 518,803.04, 715,941.78 and 292,448.54

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Solution

The fourth proportional to 518,803.04, 715,941.78 and 292,448.54 is: 403,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,803.04 : 715,941.78 = 292,448.54 : x
  2. Step 2: Convert to fraction form
    518,803.04/715,941.78 = 292,448.54/x
  3. Step 3: Cross multiply
    518,803.04x = 715,941.78 × 292,448.54
  4. Step 4: Simplify right side
    518,803.04x = 209,376,128,286.00
  5. Step 5: Solve for x
    x = 209,376,128,286.00/518,803.04
  6. Step 6: Final answer
    x = 403,575.37

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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.