Home / 557,835.20-769,818.56-303,186.40

Finding the Fourth Proportional to 557,835.20, 769,818.56 and 303,186.40

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Solution

The fourth proportional to 557,835.20, 769,818.56 and 303,186.40 is: 418,400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,835.20 : 769,818.56 = 303,186.40 : x
  2. Step 2: Convert to fraction form
    557,835.20/769,818.56 = 303,186.40/x
  3. Step 3: Cross multiply
    557,835.20x = 769,818.56 × 303,186.40
  4. Step 4: Simplify right side
    557,835.20x = 233,398,517,859.58
  5. Step 5: Solve for x
    x = 233,398,517,859.58/557,835.20
  6. Step 6: Final answer
    x = 418,400.48

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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.