Home / 916,028.78-1,264,139.97-508,117.31

Finding the Fourth Proportional to 916,028.78, 1,264,139.97 and 508,117.31

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Solution

The fourth proportional to 916,028.78, 1,264,139.97 and 508,117.31 is: 701,213.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,028.78 : 1,264,139.97 = 508,117.31 : x
  2. Step 2: Convert to fraction form
    916,028.78/1,264,139.97 = 508,117.31/x
  3. Step 3: Cross multiply
    916,028.78x = 1,264,139.97 × 508,117.31
  4. Step 4: Simplify right side
    916,028.78x = 642,331,401,019.88
  5. Step 5: Solve for x
    x = 642,331,401,019.88/916,028.78
  6. Step 6: Final answer
    x = 701,213.12

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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.