Home / 2,171,895.81-2,997,159.21-1,191,831.86

Finding the Fourth Proportional to 2,171,895.81, 2,997,159.21 and 1,191,831.86

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Solution

The fourth proportional to 2,171,895.81, 2,997,159.21 and 1,191,831.86 is: 1,644,696.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171,895.81 : 2,997,159.21 = 1,191,831.86 : x
  2. Step 2: Convert to fraction form
    2,171,895.81/2,997,159.21 = 1,191,831.86/x
  3. Step 3: Cross multiply
    2,171,895.81x = 2,997,159.21 × 1,191,831.86
  4. Step 4: Simplify right side
    2,171,895.81x = 3,572,109,820,984.63
  5. Step 5: Solve for x
    x = 3,572,109,820,984.63/2,171,895.81
  6. Step 6: Final answer
    x = 1,644,696.68

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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.