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Finding the Fourth Proportional to 508,418.84, 701,617.71 and 278,977.63

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Solution

The fourth proportional to 508,418.84, 701,617.71 and 278,977.63 is: 384,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,418.84 : 701,617.71 = 278,977.63 : x
  2. Step 2: Convert to fraction form
    508,418.84/701,617.71 = 278,977.63/x
  3. Step 3: Cross multiply
    508,418.84x = 701,617.71 × 278,977.63
  4. Step 4: Simplify right side
    508,418.84x = 195,735,645,901.83
  5. Step 5: Solve for x
    x = 195,735,645,901.83/508,418.84
  6. Step 6: Final answer
    x = 384,988.97

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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.