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Finding the Fourth Proportional to 608,894.72, 912,642.24 and 408,973.76

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Solution

The fourth proportional to 608,894.72, 912,642.24 and 408,973.76 is: 612,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,894.72 : 912,642.24 = 408,973.76 : x
  2. Step 2: Convert to fraction form
    608,894.72/912,642.24 = 408,973.76/x
  3. Step 3: Cross multiply
    608,894.72x = 912,642.24 × 408,973.76
  4. Step 4: Simplify right side
    608,894.72x = 373,246,728,427.62
  5. Step 5: Solve for x
    x = 373,246,728,427.62/608,894.72
  6. Step 6: Final answer
    x = 612,990.58

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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.