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Finding the Fourth Proportional to 513,718.56, 770,898.60 and 369,639

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Solution

The fourth proportional to 513,718.56, 770,898.60 and 369,639 is: 554,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,718.56 : 770,898.60 = 369,639 : x
  2. Step 2: Convert to fraction form
    513,718.56/770,898.60 = 369,639/x
  3. Step 3: Cross multiply
    513,718.56x = 770,898.60 × 369,639
  4. Step 4: Simplify right side
    513,718.56x = 284,954,187,605.40
  5. Step 5: Solve for x
    x = 284,954,187,605.40/513,718.56
  6. Step 6: Final answer
    x = 554,689.30

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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.