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Finding the Fourth Proportional to 1,325,612.22, 1,829,423.14 and 998,347.92

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Solution

The fourth proportional to 1,325,612.22, 1,829,423.14 and 998,347.92 is: 1,377,779.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,612.22 : 1,829,423.14 = 998,347.92 : x
  2. Step 2: Convert to fraction form
    1,325,612.22/1,829,423.14 = 998,347.92/x
  3. Step 3: Cross multiply
    1,325,612.22x = 1,829,423.14 × 998,347.92
  4. Step 4: Simplify right side
    1,325,612.22x = 1,826,400,786,618.87
  5. Step 5: Solve for x
    x = 1,826,400,786,618.87/1,325,612.22
  6. Step 6: Final answer
    x = 1,377,779.08

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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.