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Finding the Fourth Proportional to 1,354,265.64, 1,868,947.20 and 773,539.20

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Solution

The fourth proportional to 1,354,265.64, 1,868,947.20 and 773,539.20 is: 1,067,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,265.64 : 1,868,947.20 = 773,539.20 : x
  2. Step 2: Convert to fraction form
    1,354,265.64/1,868,947.20 = 773,539.20/x
  3. Step 3: Cross multiply
    1,354,265.64x = 1,868,947.20 × 773,539.20
  4. Step 4: Simplify right side
    1,354,265.64x = 1,445,703,921,930.24
  5. Step 5: Solve for x
    x = 1,445,703,921,930.24/1,354,265.64
  6. Step 6: Final answer
    x = 1,067,518.72

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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.