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Finding the Fourth Proportional to 506,908.84, 699,556.26 and 280,554.28

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Solution

The fourth proportional to 506,908.84, 699,556.26 and 280,554.28 is: 387,177.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,908.84 : 699,556.26 = 280,554.28 : x
  2. Step 2: Convert to fraction form
    506,908.84/699,556.26 = 280,554.28/x
  3. Step 3: Cross multiply
    506,908.84x = 699,556.26 × 280,554.28
  4. Step 4: Simplify right side
    506,908.84x = 196,263,502,843.79
  5. Step 5: Solve for x
    x = 196,263,502,843.79/506,908.84
  6. Step 6: Final answer
    x = 387,177.12

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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.