Home / 1,287,898.60-1,930,292.70-656,487.40

Finding the Fourth Proportional to 1,287,898.60, 1,930,292.70 and 656,487.40

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Solution

The fourth proportional to 1,287,898.60, 1,930,292.70 and 656,487.40 is: 983,938.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,898.60 : 1,930,292.70 = 656,487.40 : x
  2. Step 2: Convert to fraction form
    1,287,898.60/1,930,292.70 = 656,487.40/x
  3. Step 3: Cross multiply
    1,287,898.60x = 1,930,292.70 × 656,487.40
  4. Step 4: Simplify right side
    1,287,898.60x = 1,267,212,835,861.98
  5. Step 5: Solve for x
    x = 1,267,212,835,861.98/1,287,898.60
  6. Step 6: Final answer
    x = 983,938.36

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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.