Home / 1,287,831.62-1,777,118.74-714,826.69

Finding the Fourth Proportional to 1,287,831.62, 1,777,118.74 and 714,826.69

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Solution

The fourth proportional to 1,287,831.62, 1,777,118.74 and 714,826.69 is: 986,411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,831.62 : 1,777,118.74 = 714,826.69 : x
  2. Step 2: Convert to fraction form
    1,287,831.62/1,777,118.74 = 714,826.69/x
  3. Step 3: Cross multiply
    1,287,831.62x = 1,777,118.74 × 714,826.69
  4. Step 4: Simplify right side
    1,287,831.62x = 1,270,331,900,421.31
  5. Step 5: Solve for x
    x = 1,270,331,900,421.31/1,287,831.62
  6. Step 6: Final answer
    x = 986,411.48

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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.