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Finding the Fourth Proportional to 529,644.78, 730,879.41 and 287,925.39

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Solution

The fourth proportional to 529,644.78, 730,879.41 and 287,925.39 is: 397,320.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,644.78 : 730,879.41 = 287,925.39 : x
  2. Step 2: Convert to fraction form
    529,644.78/730,879.41 = 287,925.39/x
  3. Step 3: Cross multiply
    529,644.78x = 730,879.41 × 287,925.39
  4. Step 4: Simplify right side
    529,644.78x = 210,438,739,167.22
  5. Step 5: Solve for x
    x = 210,438,739,167.22/529,644.78
  6. Step 6: Final answer
    x = 397,320.52

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1.5x scale

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.