Home / 1,287,860.60-1,930,235.70-656,449.40

Finding the Fourth Proportional to 1,287,860.60, 1,930,235.70 and 656,449.40

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Solution

The fourth proportional to 1,287,860.60, 1,930,235.70 and 656,449.40 is: 983,881.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,860.60 : 1,930,235.70 = 656,449.40 : x
  2. Step 2: Convert to fraction form
    1,287,860.60/1,930,235.70 = 656,449.40/x
  3. Step 3: Cross multiply
    1,287,860.60x = 1,930,235.70 × 656,449.40
  4. Step 4: Simplify right side
    1,287,860.60x = 1,267,102,067,123.58
  5. Step 5: Solve for x
    x = 1,267,102,067,123.58/1,287,860.60
  6. Step 6: Final answer
    x = 983,881.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.