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Finding the Fourth Proportional to 646,624.45, 892,259.81 and 374,689.81

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Solution

The fourth proportional to 646,624.45, 892,259.81 and 374,689.81 is: 517,024.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,624.45 : 892,259.81 = 374,689.81 : x
  2. Step 2: Convert to fraction form
    646,624.45/892,259.81 = 374,689.81/x
  3. Step 3: Cross multiply
    646,624.45x = 892,259.81 × 374,689.81
  4. Step 4: Simplify right side
    646,624.45x = 334,320,656,806.09
  5. Step 5: Solve for x
    x = 334,320,656,806.09/646,624.45
  6. Step 6: Final answer
    x = 517,024.46

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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.