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Finding the Fourth Proportional to 753,215.76, 1,039,433.04 and 451,409.76

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Solution

The fourth proportional to 753,215.76, 1,039,433.04 and 451,409.76 is: 622,942.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,215.76 : 1,039,433.04 = 451,409.76 : x
  2. Step 2: Convert to fraction form
    753,215.76/1,039,433.04 = 451,409.76/x
  3. Step 3: Cross multiply
    753,215.76x = 1,039,433.04 × 451,409.76
  4. Step 4: Simplify right side
    753,215.76x = 469,210,219,122.47
  5. Step 5: Solve for x
    x = 469,210,219,122.47/753,215.76
  6. Step 6: Final answer
    x = 622,942.65

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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.