Home / 1,230,643.92-1,698,373.86-686,885.79

Finding the Fourth Proportional to 1,230,643.92, 1,698,373.86 and 686,885.79

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Solution

The fourth proportional to 1,230,643.92, 1,698,373.86 and 686,885.79 is: 947,949.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,643.92 : 1,698,373.86 = 686,885.79 : x
  2. Step 2: Convert to fraction form
    1,230,643.92/1,698,373.86 = 686,885.79/x
  3. Step 3: Cross multiply
    1,230,643.92x = 1,698,373.86 × 686,885.79
  4. Step 4: Simplify right side
    1,230,643.92x = 1,166,588,858,615.15
  5. Step 5: Solve for x
    x = 1,166,588,858,615.15/1,230,643.92
  6. Step 6: Final answer
    x = 947,949.97

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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.