Home / 1,297,485-1,790,522.19-716,748.12

Finding the Fourth Proportional to 1,297,485, 1,790,522.19 and 716,748.12

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Solution

The fourth proportional to 1,297,485, 1,790,522.19 and 716,748.12 is: 989,108.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,485 : 1,790,522.19 = 716,748.12 : x
  2. Step 2: Convert to fraction form
    1,297,485/1,790,522.19 = 716,748.12/x
  3. Step 3: Cross multiply
    1,297,485x = 1,790,522.19 × 716,748.12
  4. Step 4: Simplify right side
    1,297,485x = 1,283,353,413,500.78
  5. Step 5: Solve for x
    x = 1,283,353,413,500.78/1,297,485
  6. Step 6: Final answer
    x = 989,108.48

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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.