Home / 1,230,188.90-1,697,661.74-686,324.79

Finding the Fourth Proportional to 1,230,188.90, 1,697,661.74 and 686,324.79

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Solution

The fourth proportional to 1,230,188.90, 1,697,661.74 and 686,324.79 is: 947,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,188.90 : 1,697,661.74 = 686,324.79 : x
  2. Step 2: Convert to fraction form
    1,230,188.90/1,697,661.74 = 686,324.79/x
  3. Step 3: Cross multiply
    1,230,188.90x = 1,697,661.74 × 686,324.79
  4. Step 4: Simplify right side
    1,230,188.90x = 1,165,147,333,764.91
  5. Step 5: Solve for x
    x = 1,165,147,333,764.91/1,230,188.90
  6. Step 6: Final answer
    x = 947,128.80

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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.