Home / 479,378.07-661,519.58-275,285.39

Finding the Fourth Proportional to 479,378.07, 661,519.58 and 275,285.39

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Solution

The fourth proportional to 479,378.07, 661,519.58 and 275,285.39 is: 379,881.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,378.07 : 661,519.58 = 275,285.39 : x
  2. Step 2: Convert to fraction form
    479,378.07/661,519.58 = 275,285.39/x
  3. Step 3: Cross multiply
    479,378.07x = 661,519.58 × 275,285.39
  4. Step 4: Simplify right side
    479,378.07x = 182,106,670,888.91
  5. Step 5: Solve for x
    x = 182,106,670,888.91/479,378.07
  6. Step 6: Final answer
    x = 379,881.10

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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.