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Finding the Fourth Proportional to 646,663.80, 892,396.28 and 374,889.24

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Solution

The fourth proportional to 646,663.80, 892,396.28 and 374,889.24 is: 517,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,663.80 : 892,396.28 = 374,889.24 : x
  2. Step 2: Convert to fraction form
    646,663.80/892,396.28 = 374,889.24/x
  3. Step 3: Cross multiply
    646,663.80x = 892,396.28 × 374,889.24
  4. Step 4: Simplify right side
    646,663.80x = 334,549,763,188.03
  5. Step 5: Solve for x
    x = 334,549,763,188.03/646,663.80
  6. Step 6: Final answer
    x = 517,347.29

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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.