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Finding the Fourth Proportional to 661,514.40, 912,813.84 and 374,977.44

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Solution

The fourth proportional to 661,514.40, 912,813.84 and 374,977.44 is: 517,425.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,514.40 : 912,813.84 = 374,977.44 : x
  2. Step 2: Convert to fraction form
    661,514.40/912,813.84 = 374,977.44/x
  3. Step 3: Cross multiply
    661,514.40x = 912,813.84 × 374,977.44
  4. Step 4: Simplify right side
    661,514.40x = 342,284,596,919.77
  5. Step 5: Solve for x
    x = 342,284,596,919.77/661,514.40
  6. Step 6: Final answer
    x = 517,425.77

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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.