Home / 1,288,552.61-1,778,153.92-715,629.68

Finding the Fourth Proportional to 1,288,552.61, 1,778,153.92 and 715,629.68

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Solution

The fourth proportional to 1,288,552.61, 1,778,153.92 and 715,629.68 is: 987,541.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,552.61 : 1,778,153.92 = 715,629.68 : x
  2. Step 2: Convert to fraction form
    1,288,552.61/1,778,153.92 = 715,629.68/x
  3. Step 3: Cross multiply
    1,288,552.61x = 1,778,153.92 × 715,629.68
  4. Step 4: Simplify right side
    1,288,552.61x = 1,272,499,726,750.69
  5. Step 5: Solve for x
    x = 1,272,499,726,750.69/1,288,552.61
  6. Step 6: Final answer
    x = 987,541.93

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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.