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Finding the Fourth Proportional to 1,253,673, 1,730,068.74 and 717,129

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Solution

The fourth proportional to 1,253,673, 1,730,068.74 and 717,129 is: 989,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,673 : 1,730,068.74 = 717,129 : x
  2. Step 2: Convert to fraction form
    1,253,673/1,730,068.74 = 717,129/x
  3. Step 3: Cross multiply
    1,253,673x = 1,730,068.74 × 717,129
  4. Step 4: Simplify right side
    1,253,673x = 1,240,682,465,447.46
  5. Step 5: Solve for x
    x = 1,240,682,465,447.46/1,253,673
  6. Step 6: Final answer
    x = 989,638.02

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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.