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Finding the Fourth Proportional to 609,016.92, 913,586.76 and 209,605.20

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Solution

The fourth proportional to 609,016.92, 913,586.76 and 209,605.20 is: 314,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,016.92 : 913,586.76 = 209,605.20 : x
  2. Step 2: Convert to fraction form
    609,016.92/913,586.76 = 209,605.20/x
  3. Step 3: Cross multiply
    609,016.92x = 913,586.76 × 209,605.20
  4. Step 4: Simplify right side
    609,016.92x = 191,492,535,547.15
  5. Step 5: Solve for x
    x = 191,492,535,547.15/609,016.92
  6. Step 6: Final answer
    x = 314,428.93

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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.