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Finding the Fourth Proportional to 608,895.72, 912,643.74 and 408,974.76

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Solution

The fourth proportional to 608,895.72, 912,643.74 and 408,974.76 is: 612,992.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,895.72 : 912,643.74 = 408,974.76 : x
  2. Step 2: Convert to fraction form
    608,895.72/912,643.74 = 408,974.76/x
  3. Step 3: Cross multiply
    608,895.72x = 912,643.74 × 408,974.76
  4. Step 4: Simplify right side
    608,895.72x = 373,248,254,532.00
  5. Step 5: Solve for x
    x = 373,248,254,532.00/608,895.72
  6. Step 6: Final answer
    x = 612,992.08

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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.