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Finding the Fourth Proportional to 554,839.84, 765,678.72 and 313,173.12

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Solution

The fourth proportional to 554,839.84, 765,678.72 and 313,173.12 is: 432,178.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,839.84 : 765,678.72 = 313,173.12 : x
  2. Step 2: Convert to fraction form
    554,839.84/765,678.72 = 313,173.12/x
  3. Step 3: Cross multiply
    554,839.84x = 765,678.72 × 313,173.12
  4. Step 4: Simplify right side
    554,839.84x = 239,789,993,660.01
  5. Step 5: Solve for x
    x = 239,789,993,660.01/554,839.84
  6. Step 6: Final answer
    x = 432,178.76

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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.