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Finding the Fourth Proportional to 554,840.84, 765,680.10 and 313,174.12

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Solution

The fourth proportional to 554,840.84, 765,680.10 and 313,174.12 is: 432,180.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,840.84 : 765,680.10 = 313,174.12 : x
  2. Step 2: Convert to fraction form
    554,840.84/765,680.10 = 313,174.12/x
  3. Step 3: Cross multiply
    554,840.84x = 765,680.10 × 313,174.12
  4. Step 4: Simplify right side
    554,840.84x = 239,791,191,519.01
  5. Step 5: Solve for x
    x = 239,791,191,519.01/554,840.84
  6. Step 6: Final answer
    x = 432,180.14

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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.