Home / 1,287,986.32-1,777,331.91-714,981.25

Finding the Fourth Proportional to 1,287,986.32, 1,777,331.91 and 714,981.25

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Solution

The fourth proportional to 1,287,986.32, 1,777,331.91 and 714,981.25 is: 986,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,986.32 : 1,777,331.91 = 714,981.25 : x
  2. Step 2: Convert to fraction form
    1,287,986.32/1,777,331.91 = 714,981.25/x
  3. Step 3: Cross multiply
    1,287,986.32x = 1,777,331.91 × 714,981.25
  4. Step 4: Simplify right side
    1,287,986.32x = 1,270,758,990,676.69
  5. Step 5: Solve for x
    x = 1,270,758,990,676.69/1,287,986.32
  6. Step 6: Final answer
    x = 986,624.60

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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.