Home / 890,284.78-1,336,761.24-770,710.51

Finding the Fourth Proportional to 890,284.78, 1,336,761.24 and 770,710.51

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Solution

The fourth proportional to 890,284.78, 1,336,761.24 and 770,710.51 is: 1,157,220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,284.78 : 1,336,761.24 = 770,710.51 : x
  2. Step 2: Convert to fraction form
    890,284.78/1,336,761.24 = 770,710.51/x
  3. Step 3: Cross multiply
    890,284.78x = 1,336,761.24 × 770,710.51
  4. Step 4: Simplify right side
    890,284.78x = 1,030,255,937,028.63
  5. Step 5: Solve for x
    x = 1,030,255,937,028.63/890,284.78
  6. Step 6: Final answer
    x = 1,157,220.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.