Home / 1,386,487.75-1,913,162.90-774,564.47

Finding the Fourth Proportional to 1,386,487.75, 1,913,162.90 and 774,564.47

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Solution

The fourth proportional to 1,386,487.75, 1,913,162.90 and 774,564.47 is: 1,068,792.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,487.75 : 1,913,162.90 = 774,564.47 : x
  2. Step 2: Convert to fraction form
    1,386,487.75/1,913,162.90 = 774,564.47/x
  3. Step 3: Cross multiply
    1,386,487.75x = 1,913,162.90 × 774,564.47
  4. Step 4: Simplify right side
    1,386,487.75x = 1,481,867,994,223.53
  5. Step 5: Solve for x
    x = 1,481,867,994,223.53/1,386,487.75
  6. Step 6: Final answer
    x = 1,068,792.71

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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.