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Finding the Fourth Proportional to 660,087.46, 989,076.48 and 423,233.74

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Solution

The fourth proportional to 660,087.46, 989,076.48 and 423,233.74 is: 634,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,087.46 : 989,076.48 = 423,233.74 : x
  2. Step 2: Convert to fraction form
    660,087.46/989,076.48 = 423,233.74/x
  3. Step 3: Cross multiply
    660,087.46x = 989,076.48 × 423,233.74
  4. Step 4: Simplify right side
    660,087.46x = 418,610,537,776.44
  5. Step 5: Solve for x
    x = 418,610,537,776.44/660,087.46
  6. Step 6: Final answer
    x = 634,174.35

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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.