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Finding the Fourth Proportional to 1,404,640.80, 1,938,411.14 and 792,819.45

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Solution

The fourth proportional to 1,404,640.80, 1,938,411.14 and 792,819.45 is: 1,094,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404,640.80 : 1,938,411.14 = 792,819.45 : x
  2. Step 2: Convert to fraction form
    1,404,640.80/1,938,411.14 = 792,819.45/x
  3. Step 3: Cross multiply
    1,404,640.80x = 1,938,411.14 × 792,819.45
  4. Step 4: Simplify right side
    1,404,640.80x = 1,536,810,049,924.58
  5. Step 5: Solve for x
    x = 1,536,810,049,924.58/1,404,640.80
  6. Step 6: Final answer
    x = 1,094,094.70

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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.