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Finding the Fourth Proportional to 922,311.28, 1,374,298.16 and 821,698.32

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Solution

The fourth proportional to 922,311.28, 1,374,298.16 and 821,698.32 is: 1,224,378.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,311.28 : 1,374,298.16 = 821,698.32 : x
  2. Step 2: Convert to fraction form
    922,311.28/1,374,298.16 = 821,698.32/x
  3. Step 3: Cross multiply
    922,311.28x = 1,374,298.16 × 821,698.32
  4. Step 4: Simplify right side
    922,311.28x = 1,129,258,489,251.09
  5. Step 5: Solve for x
    x = 1,129,258,489,251.09/922,311.28
  6. Step 6: Final answer
    x = 1,224,378.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.