Home / 1,187,045.90-1,778,701.74-917,831.66

Finding the Fourth Proportional to 1,187,045.90, 1,778,701.74 and 917,831.66

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Solution

The fourth proportional to 1,187,045.90, 1,778,701.74 and 917,831.66 is: 1,375,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,045.90 : 1,778,701.74 = 917,831.66 : x
  2. Step 2: Convert to fraction form
    1,187,045.90/1,778,701.74 = 917,831.66/x
  3. Step 3: Cross multiply
    1,187,045.90x = 1,778,701.74 × 917,831.66
  4. Step 4: Simplify right side
    1,187,045.90x = 1,632,548,770,669.09
  5. Step 5: Solve for x
    x = 1,632,548,770,669.09/1,187,045.90
  6. Step 6: Final answer
    x = 1,375,303.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.