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Finding the Fourth Proportional to 646,518.06, 892,137.78 and 374,499

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Solution

The fourth proportional to 646,518.06, 892,137.78 and 374,499 is: 516,775.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,518.06 : 892,137.78 = 374,499 : x
  2. Step 2: Convert to fraction form
    646,518.06/892,137.78 = 374,499/x
  3. Step 3: Cross multiply
    646,518.06x = 892,137.78 × 374,499
  4. Step 4: Simplify right side
    646,518.06x = 334,104,706,472.22
  5. Step 5: Solve for x
    x = 334,104,706,472.22/646,518.06
  6. Step 6: Final answer
    x = 516,775.52

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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.