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Finding the Fourth Proportional to 464,396.81, 640,274.32 and 300,764.21

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Solution

The fourth proportional to 464,396.81, 640,274.32 and 300,764.21 is: 414,670.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,396.81 : 640,274.32 = 300,764.21 : x
  2. Step 2: Convert to fraction form
    464,396.81/640,274.32 = 300,764.21/x
  3. Step 3: Cross multiply
    464,396.81x = 640,274.32 × 300,764.21
  4. Step 4: Simplify right side
    464,396.81x = 192,571,602,614.99
  5. Step 5: Solve for x
    x = 192,571,602,614.99/464,396.81
  6. Step 6: Final answer
    x = 414,670.39

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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.