Home / 1,287,930.60-1,930,340.70-656,519.40

Finding the Fourth Proportional to 1,287,930.60, 1,930,340.70 and 656,519.40

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Solution

The fourth proportional to 1,287,930.60, 1,930,340.70 and 656,519.40 is: 983,986.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,930.60 : 1,930,340.70 = 656,519.40 : x
  2. Step 2: Convert to fraction form
    1,287,930.60/1,930,340.70 = 656,519.40/x
  3. Step 3: Cross multiply
    1,287,930.60x = 1,930,340.70 × 656,519.40
  4. Step 4: Simplify right side
    1,287,930.60x = 1,267,306,118,159.58
  5. Step 5: Solve for x
    x = 1,267,306,118,159.58/1,287,930.60
  6. Step 6: Final answer
    x = 983,986.34

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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.