Home / 990,935.78-1,486,460.16-280,908

Finding the Fourth Proportional to 990,935.78, 1,486,460.16 and 280,908

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Solution

The fourth proportional to 990,935.78, 1,486,460.16 and 280,908 is: 421,378.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,935.78 : 1,486,460.16 = 280,908 : x
  2. Step 2: Convert to fraction form
    990,935.78/1,486,460.16 = 280,908/x
  3. Step 3: Cross multiply
    990,935.78x = 1,486,460.16 × 280,908
  4. Step 4: Simplify right side
    990,935.78x = 417,558,550,625.28
  5. Step 5: Solve for x
    x = 417,558,550,625.28/990,935.78
  6. Step 6: Final answer
    x = 421,378.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.