Home / 529,005,990-730,036,992.60-290,861,255.28

Finding the Fourth Proportional to 529,005,990, 730,036,992.60 and 290,861,255.28

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Solution

The fourth proportional to 529,005,990, 730,036,992.60 and 290,861,255.28 is: 401,393,330.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,005,990 : 730,036,992.60 = 290,861,255.28 : x
  2. Step 2: Convert to fraction form
    529,005,990/730,036,992.60 = 290,861,255.28/x
  3. Step 3: Cross multiply
    529,005,990x = 730,036,992.60 × 290,861,255.28
  4. Step 4: Simplify right side
    529,005,990x = 212,339,476,068,472,064
  5. Step 5: Solve for x
    x = 212,339,476,068,472,064/529,005,990
  6. Step 6: Final answer
    x = 401,393,330.29

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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.