Home / 1,261,783.28-1,741,263.72-688,823.60

Finding the Fourth Proportional to 1,261,783.28, 1,741,263.72 and 688,823.60

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Solution

The fourth proportional to 1,261,783.28, 1,741,263.72 and 688,823.60 is: 950,578.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,783.28 : 1,741,263.72 = 688,823.60 : x
  2. Step 2: Convert to fraction form
    1,261,783.28/1,741,263.72 = 688,823.60/x
  3. Step 3: Cross multiply
    1,261,783.28x = 1,741,263.72 × 688,823.60
  4. Step 4: Simplify right side
    1,261,783.28x = 1,199,423,544,159.79
  5. Step 5: Solve for x
    x = 1,199,423,544,159.79/1,261,783.28
  6. Step 6: Final answer
    x = 950,578.09

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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.