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Finding the Fourth Proportional to 619,960.46, 855,545.10 and 348,028.88

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Solution

The fourth proportional to 619,960.46, 855,545.10 and 348,028.88 is: 480,279.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,960.46 : 855,545.10 = 348,028.88 : x
  2. Step 2: Convert to fraction form
    619,960.46/855,545.10 = 348,028.88/x
  3. Step 3: Cross multiply
    619,960.46x = 855,545.10 × 348,028.88
  4. Step 4: Simplify right side
    619,960.46x = 297,754,402,942.49
  5. Step 5: Solve for x
    x = 297,754,402,942.49/619,960.46
  6. Step 6: Final answer
    x = 480,279.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.