Home / 1,287,607.69-1,776,898.51-714,647.71

Finding the Fourth Proportional to 1,287,607.69, 1,776,898.51 and 714,647.71

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Solution

The fourth proportional to 1,287,607.69, 1,776,898.51 and 714,647.71 is: 986,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,607.69 : 1,776,898.51 = 714,647.71 : x
  2. Step 2: Convert to fraction form
    1,287,607.69/1,776,898.51 = 714,647.71/x
  3. Step 3: Cross multiply
    1,287,607.69x = 1,776,898.51 × 714,647.71
  4. Step 4: Simplify right side
    1,287,607.69x = 1,269,856,451,073.91
  5. Step 5: Solve for x
    x = 1,269,856,451,073.91/1,287,607.69
  6. Step 6: Final answer
    x = 986,213.78

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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.