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Finding the Fourth Proportional to 413,801.70, 620,702.55 and 245,840.10

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Solution

The fourth proportional to 413,801.70, 620,702.55 and 245,840.10 is: 368,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,801.70 : 620,702.55 = 245,840.10 : x
  2. Step 2: Convert to fraction form
    413,801.70/620,702.55 = 245,840.10/x
  3. Step 3: Cross multiply
    413,801.70x = 620,702.55 × 245,840.10
  4. Step 4: Simplify right side
    413,801.70x = 152,593,576,962.26
  5. Step 5: Solve for x
    x = 152,593,576,962.26/413,801.70
  6. Step 6: Final answer
    x = 368,760.15

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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.