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Finding the Fourth Proportional to 619,963.34, 855,549.07 and 348,031.76

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Solution

The fourth proportional to 619,963.34, 855,549.07 and 348,031.76 is: 480,283.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,963.34 : 855,549.07 = 348,031.76 : x
  2. Step 2: Convert to fraction form
    619,963.34/855,549.07 = 348,031.76/x
  3. Step 3: Cross multiply
    619,963.34x = 855,549.07 × 348,031.76
  4. Step 4: Simplify right side
    619,963.34x = 297,758,243,450.64
  5. Step 5: Solve for x
    x = 297,758,243,450.64/619,963.34
  6. Step 6: Final answer
    x = 480,283.63

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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.