Home / 1,258,621.40-1,736,900.70-685,665.74

Finding the Fourth Proportional to 1,258,621.40, 1,736,900.70 and 685,665.74

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Solution

The fourth proportional to 1,258,621.40, 1,736,900.70 and 685,665.74 is: 946,220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,621.40 : 1,736,900.70 = 685,665.74 : x
  2. Step 2: Convert to fraction form
    1,258,621.40/1,736,900.70 = 685,665.74/x
  3. Step 3: Cross multiply
    1,258,621.40x = 1,736,900.70 × 685,665.74
  4. Step 4: Simplify right side
    1,258,621.40x = 1,190,933,303,772.02
  5. Step 5: Solve for x
    x = 1,190,933,303,772.02/1,258,621.40
  6. Step 6: Final answer
    x = 946,220.45

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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.