Home / 529,700.78-730,983.45-287,983.35

Finding the Fourth Proportional to 529,700.78, 730,983.45 and 287,983.35

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Solution

The fourth proportional to 529,700.78, 730,983.45 and 287,983.35 is: 397,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,700.78 : 730,983.45 = 287,983.35 : x
  2. Step 2: Convert to fraction form
    529,700.78/730,983.45 = 287,983.35/x
  3. Step 3: Cross multiply
    529,700.78x = 730,983.45 × 287,983.35
  4. Step 4: Simplify right side
    529,700.78x = 210,511,063,805.50
  5. Step 5: Solve for x
    x = 210,511,063,805.50/529,700.78
  6. Step 6: Final answer
    x = 397,415.05

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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.