Home / 1,290,258.02-1,780,455.21-717,263.30

Finding the Fourth Proportional to 1,290,258.02, 1,780,455.21 and 717,263.30

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Solution

The fourth proportional to 1,290,258.02, 1,780,455.21 and 717,263.30 is: 989,767.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,258.02 : 1,780,455.21 = 717,263.30 : x
  2. Step 2: Convert to fraction form
    1,290,258.02/1,780,455.21 = 717,263.30/x
  3. Step 3: Cross multiply
    1,290,258.02x = 1,780,455.21 × 717,263.30
  4. Step 4: Simplify right side
    1,290,258.02x = 1,277,055,175,840.48
  5. Step 5: Solve for x
    x = 1,277,055,175,840.48/1,290,258.02
  6. Step 6: Final answer
    x = 989,767.28

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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.