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Finding the Fourth Proportional to 744,378.72, 1,027,509.84 and 442,572

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Solution

The fourth proportional to 744,378.72, 1,027,509.84 and 442,572 is: 610,908.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,378.72 : 1,027,509.84 = 442,572 : x
  2. Step 2: Convert to fraction form
    744,378.72/1,027,509.84 = 442,572/x
  3. Step 3: Cross multiply
    744,378.72x = 1,027,509.84 × 442,572
  4. Step 4: Simplify right side
    744,378.72x = 454,747,084,908.48
  5. Step 5: Solve for x
    x = 454,747,084,908.48/744,378.72
  6. Step 6: Final answer
    x = 610,908.23

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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.