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Finding the Fourth Proportional to 637,699,942.40, 956,773,862.40 and 274,305,689.60

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Solution

The fourth proportional to 637,699,942.40, 956,773,862.40 and 274,305,689.60 is: 411,554,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,699,942.40 : 956,773,862.40 = 274,305,689.60 : x
  2. Step 2: Convert to fraction form
    637,699,942.40/956,773,862.40 = 274,305,689.60/x
  3. Step 3: Cross multiply
    637,699,942.40x = 956,773,862.40 × 274,305,689.60
  4. Step 4: Simplify right side
    637,699,942.40x = 262,448,514,116,887,520
  5. Step 5: Solve for x
    x = 262,448,514,116,887,520/637,699,942.40
  6. Step 6: Final answer
    x = 411,554,865.65

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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.