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Finding the Fourth Proportional to 1,354,475.90, 1,869,105.29 and 773,584.82

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Solution

The fourth proportional to 1,354,475.90, 1,869,105.29 and 773,584.82 is: 1,067,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,475.90 : 1,869,105.29 = 773,584.82 : x
  2. Step 2: Convert to fraction form
    1,354,475.90/1,869,105.29 = 773,584.82/x
  3. Step 3: Cross multiply
    1,354,475.90x = 1,869,105.29 × 773,584.82
  4. Step 4: Simplify right side
    1,354,475.90x = 1,445,911,480,130.54
  5. Step 5: Solve for x
    x = 1,445,911,480,130.54/1,354,475.90
  6. Step 6: Final answer
    x = 1,067,506.25

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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.