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Finding the Fourth Proportional to 922,342.92, 1,374,344.96 and 821,730

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Solution

The fourth proportional to 922,342.92, 1,374,344.96 and 821,730 is: 1,224,425.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,342.92 : 1,374,344.96 = 821,730 : x
  2. Step 2: Convert to fraction form
    922,342.92/1,374,344.96 = 821,730/x
  3. Step 3: Cross multiply
    922,342.92x = 1,374,344.96 × 821,730
  4. Step 4: Simplify right side
    922,342.92x = 1,129,340,483,980.80
  5. Step 5: Solve for x
    x = 1,129,340,483,980.80/922,342.92
  6. Step 6: Final answer
    x = 1,224,425.82

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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.