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Finding the Fourth Proportional to 646,368.60, 891,980.22 and 374,473.56

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Solution

The fourth proportional to 646,368.60, 891,980.22 and 374,473.56 is: 516,768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,368.60 : 891,980.22 = 374,473.56 : x
  2. Step 2: Convert to fraction form
    646,368.60/891,980.22 = 374,473.56/x
  3. Step 3: Cross multiply
    646,368.60x = 891,980.22 × 374,473.56
  4. Step 4: Simplify right side
    646,368.60x = 334,023,008,432.98
  5. Step 5: Solve for x
    x = 334,023,008,432.98/646,368.60
  6. Step 6: Final answer
    x = 516,768.62

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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.