Home / 915,696-1,263,738.40-513,365.76

Finding the Fourth Proportional to 915,696, 1,263,738.40 and 513,365.76

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Solution

The fourth proportional to 915,696, 1,263,738.40 and 513,365.76 is: 708,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,696 : 1,263,738.40 = 513,365.76 : x
  2. Step 2: Convert to fraction form
    915,696/1,263,738.40 = 513,365.76/x
  3. Step 3: Cross multiply
    915,696x = 1,263,738.40 × 513,365.76
  4. Step 4: Simplify right side
    915,696x = 648,760,024,157.18
  5. Step 5: Solve for x
    x = 648,760,024,157.18/915,696
  6. Step 6: Final answer
    x = 708,488.43

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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.