Home / 917,072.55-1,265,599.65-509,174.41

Finding the Fourth Proportional to 917,072.55, 1,265,599.65 and 509,174.41

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Solution

The fourth proportional to 917,072.55, 1,265,599.65 and 509,174.41 is: 702,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,072.55 : 1,265,599.65 = 509,174.41 : x
  2. Step 2: Convert to fraction form
    917,072.55/1,265,599.65 = 509,174.41/x
  3. Step 3: Cross multiply
    917,072.55x = 1,265,599.65 × 509,174.41
  4. Step 4: Simplify right side
    917,072.55x = 644,410,954,121.08
  5. Step 5: Solve for x
    x = 644,410,954,121.08/917,072.55
  6. Step 6: Final answer
    x = 702,682.63

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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.