Home / 1,230,190.90-1,697,664.50-686,326.80

Finding the Fourth Proportional to 1,230,190.90, 1,697,664.50 and 686,326.80

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Solution

The fourth proportional to 1,230,190.90, 1,697,664.50 and 686,326.80 is: 947,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,190.90 : 1,697,664.50 = 686,326.80 : x
  2. Step 2: Convert to fraction form
    1,230,190.90/1,697,664.50 = 686,326.80/x
  3. Step 3: Cross multiply
    1,230,190.90x = 1,697,664.50 × 686,326.80
  4. Step 4: Simplify right side
    1,230,190.90x = 1,165,152,643,758.60
  5. Step 5: Solve for x
    x = 1,165,152,643,758.60/1,230,190.90
  6. Step 6: Final answer
    x = 947,131.57

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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.