Home / 917,132.07-1,265,580.56-509,212.83

Finding the Fourth Proportional to 917,132.07, 1,265,580.56 and 509,212.83

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Solution

The fourth proportional to 917,132.07, 1,265,580.56 and 509,212.83 is: 702,679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,132.07 : 1,265,580.56 = 509,212.83 : x
  2. Step 2: Convert to fraction form
    917,132.07/1,265,580.56 = 509,212.83/x
  3. Step 3: Cross multiply
    917,132.07x = 1,265,580.56 × 509,212.83
  4. Step 4: Simplify right side
    917,132.07x = 644,449,856,004.52
  5. Step 5: Solve for x
    x = 644,449,856,004.52/917,132.07
  6. Step 6: Final answer
    x = 702,679.45

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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.