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Finding the Fourth Proportional to 619,963.64, 855,549.40 and 348,032.04

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Solution

The fourth proportional to 619,963.64, 855,549.40 and 348,032.04 is: 480,283.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,963.64 : 855,549.40 = 348,032.04 : x
  2. Step 2: Convert to fraction form
    619,963.64/855,549.40 = 348,032.04/x
  3. Step 3: Cross multiply
    619,963.64x = 855,549.40 × 348,032.04
  4. Step 4: Simplify right side
    619,963.64x = 297,758,603,002.78
  5. Step 5: Solve for x
    x = 297,758,603,002.78/619,963.64
  6. Step 6: Final answer
    x = 480,283.98

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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.