Home / 1,287,836.15-1,777,124.93-714,831.21

Finding the Fourth Proportional to 1,287,836.15, 1,777,124.93 and 714,831.21

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Solution

The fourth proportional to 1,287,836.15, 1,777,124.93 and 714,831.21 is: 986,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,836.15 : 1,777,124.93 = 714,831.21 : x
  2. Step 2: Convert to fraction form
    1,287,836.15/1,777,124.93 = 714,831.21/x
  3. Step 3: Cross multiply
    1,287,836.15x = 1,777,124.93 × 714,831.21
  4. Step 4: Simplify right side
    1,287,836.15x = 1,270,344,360,458.91
  5. Step 5: Solve for x
    x = 1,270,344,360,458.91/1,287,836.15
  6. Step 6: Final answer
    x = 986,417.69

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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.