Home / 911,126-1,257,431.68-508,795.76

Finding the Fourth Proportional to 911,126, 1,257,431.68 and 508,795.76

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Solution

The fourth proportional to 911,126, 1,257,431.68 and 508,795.76 is: 702,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,126 : 1,257,431.68 = 508,795.76 : x
  2. Step 2: Convert to fraction form
    911,126/1,257,431.68 = 508,795.76/x
  3. Step 3: Cross multiply
    911,126x = 1,257,431.68 × 508,795.76
  4. Step 4: Simplify right side
    911,126x = 639,775,907,273.68
  5. Step 5: Solve for x
    x = 639,775,907,273.68/911,126
  6. Step 6: Final answer
    x = 702,181.59

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1.5x scale

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.