Home / 1,221,831.70-1,833,622.35-512,368.90

Finding the Fourth Proportional to 1,221,831.70, 1,833,622.35 and 512,368.90

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Solution

The fourth proportional to 1,221,831.70, 1,833,622.35 and 512,368.90 is: 768,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,831.70 : 1,833,622.35 = 512,368.90 : x
  2. Step 2: Convert to fraction form
    1,221,831.70/1,833,622.35 = 512,368.90/x
  3. Step 3: Cross multiply
    1,221,831.70x = 1,833,622.35 × 512,368.90
  4. Step 4: Simplify right side
    1,221,831.70x = 939,491,066,484.92
  5. Step 5: Solve for x
    x = 939,491,066,484.92/1,221,831.70
  6. Step 6: Final answer
    x = 768,920.19

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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.