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Finding the Fourth Proportional to 623,676, 860,675.28 and 348,045.60

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Solution

The fourth proportional to 623,676, 860,675.28 and 348,045.60 is: 480,304.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,676 : 860,675.28 = 348,045.60 : x
  2. Step 2: Convert to fraction form
    623,676/860,675.28 = 348,045.60/x
  3. Step 3: Cross multiply
    623,676x = 860,675.28 × 348,045.60
  4. Step 4: Simplify right side
    623,676x = 299,554,244,232.77
  5. Step 5: Solve for x
    x = 299,554,244,232.77/623,676
  6. Step 6: Final answer
    x = 480,304.27

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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.