Home / 1,261,178.69-1,740,463.36-688,255.76

Finding the Fourth Proportional to 1,261,178.69, 1,740,463.36 and 688,255.76

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Solution

The fourth proportional to 1,261,178.69, 1,740,463.36 and 688,255.76 is: 949,813.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,178.69 : 1,740,463.36 = 688,255.76 : x
  2. Step 2: Convert to fraction form
    1,261,178.69/1,740,463.36 = 688,255.76/x
  3. Step 3: Cross multiply
    1,261,178.69x = 1,740,463.36 × 688,255.76
  4. Step 4: Simplify right side
    1,261,178.69x = 1,197,883,935,219.47
  5. Step 5: Solve for x
    x = 1,197,883,935,219.47/1,261,178.69
  6. Step 6: Final answer
    x = 949,813.02

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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.