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Finding the Fourth Proportional to 646,651.72, 892,356.24 and 360,156.34

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Solution

The fourth proportional to 646,651.72, 892,356.24 and 360,156.34 is: 497,002.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,651.72 : 892,356.24 = 360,156.34 : x
  2. Step 2: Convert to fraction form
    646,651.72/892,356.24 = 360,156.34/x
  3. Step 3: Cross multiply
    646,651.72x = 892,356.24 × 360,156.34
  4. Step 4: Simplify right side
    646,651.72x = 321,387,757,374.56
  5. Step 5: Solve for x
    x = 321,387,757,374.56/646,651.72
  6. Step 6: Final answer
    x = 497,002.86

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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.