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Finding the Fourth Proportional to 922,312.28, 1,374,299.65 and 821,699.32

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Solution

The fourth proportional to 922,312.28, 1,374,299.65 and 821,699.32 is: 1,224,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,312.28 : 1,374,299.65 = 821,699.32 : x
  2. Step 2: Convert to fraction form
    922,312.28/1,374,299.65 = 821,699.32/x
  3. Step 3: Cross multiply
    922,312.28x = 1,374,299.65 × 821,699.32
  4. Step 4: Simplify right side
    922,312.28x = 1,129,261,087,881.24
  5. Step 5: Solve for x
    x = 1,129,261,087,881.24/922,312.28
  6. Step 6: Final answer
    x = 1,224,380.41

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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.