Home / 1,142,135.80-1,575,557.82-774,488.62

Finding the Fourth Proportional to 1,142,135.80, 1,575,557.82 and 774,488.62

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Solution

The fourth proportional to 1,142,135.80, 1,575,557.82 and 774,488.62 is: 1,068,394.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,135.80 : 1,575,557.82 = 774,488.62 : x
  2. Step 2: Convert to fraction form
    1,142,135.80/1,575,557.82 = 774,488.62/x
  3. Step 3: Cross multiply
    1,142,135.80x = 1,575,557.82 × 774,488.62
  4. Step 4: Simplify right side
    1,142,135.80x = 1,220,251,601,742.01
  5. Step 5: Solve for x
    x = 1,220,251,601,742.01/1,142,135.80
  6. Step 6: Final answer
    x = 1,068,394.50

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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.