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Finding the Fourth Proportional to 608,213.69, 912,695.74 and 308,909.07

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Solution

The fourth proportional to 608,213.69, 912,695.74 and 308,909.07 is: 463,554.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,213.69 : 912,695.74 = 308,909.07 : x
  2. Step 2: Convert to fraction form
    608,213.69/912,695.74 = 308,909.07/x
  3. Step 3: Cross multiply
    608,213.69x = 912,695.74 × 308,909.07
  4. Step 4: Simplify right side
    608,213.69x = 281,939,992,236.36
  5. Step 5: Solve for x
    x = 281,939,992,236.36/608,213.69
  6. Step 6: Final answer
    x = 463,554.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.