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Finding the Fourth Proportional to 637,894.40, 956,841.60 and 438,828.80

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Solution

The fourth proportional to 637,894.40, 956,841.60 and 438,828.80 is: 658,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,894.40 : 956,841.60 = 438,828.80 : x
  2. Step 2: Convert to fraction form
    637,894.40/956,841.60 = 438,828.80/x
  3. Step 3: Cross multiply
    637,894.40x = 956,841.60 × 438,828.80
  4. Step 4: Simplify right side
    637,894.40x = 419,889,651,118.08
  5. Step 5: Solve for x
    x = 419,889,651,118.08/637,894.40
  6. Step 6: Final answer
    x = 658,243.20

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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.