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Finding the Fourth Proportional to 800,018.40, 1,104,020.40 and 442,322.40

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Solution

The fourth proportional to 800,018.40, 1,104,020.40 and 442,322.40 is: 610,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,018.40 : 1,104,020.40 = 442,322.40 : x
  2. Step 2: Convert to fraction form
    800,018.40/1,104,020.40 = 442,322.40/x
  3. Step 3: Cross multiply
    800,018.40x = 1,104,020.40 × 442,322.40
  4. Step 4: Simplify right side
    800,018.40x = 488,332,952,976.96
  5. Step 5: Solve for x
    x = 488,332,952,976.96/800,018.40
  6. Step 6: Final answer
    x = 610,402.15

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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.