Home / 663,127.78-994,985.70-347,509.66

Finding the Fourth Proportional to 663,127.78, 994,985.70 and 347,509.66

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Solution

The fourth proportional to 663,127.78, 994,985.70 and 347,509.66 is: 521,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,127.78 : 994,985.70 = 347,509.66 : x
  2. Step 2: Convert to fraction form
    663,127.78/994,985.70 = 347,509.66/x
  3. Step 3: Cross multiply
    663,127.78x = 994,985.70 × 347,509.66
  4. Step 4: Simplify right side
    663,127.78x = 345,767,142,311.86
  5. Step 5: Solve for x
    x = 345,767,142,311.86/663,127.78
  6. Step 6: Final answer
    x = 521,418.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.