Home / 1,288,553.86-1,778,155.64-715,630.94

Finding the Fourth Proportional to 1,288,553.86, 1,778,155.64 and 715,630.94

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Solution

The fourth proportional to 1,288,553.86, 1,778,155.64 and 715,630.94 is: 987,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,553.86 : 1,778,155.64 = 715,630.94 : x
  2. Step 2: Convert to fraction form
    1,288,553.86/1,778,155.64 = 715,630.94/x
  3. Step 3: Cross multiply
    1,288,553.86x = 1,778,155.64 × 715,630.94
  4. Step 4: Simplify right side
    1,288,553.86x = 1,272,503,183,228.72
  5. Step 5: Solve for x
    x = 1,272,503,183,228.72/1,288,553.86
  6. Step 6: Final answer
    x = 987,543.65

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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.