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Finding the Fourth Proportional to 663,945.44, 916,322.16 and 377,508.44

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Solution

The fourth proportional to 663,945.44, 916,322.16 and 377,508.44 is: 521,005.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,945.44 : 916,322.16 = 377,508.44 : x
  2. Step 2: Convert to fraction form
    663,945.44/916,322.16 = 377,508.44/x
  3. Step 3: Cross multiply
    663,945.44x = 916,322.16 × 377,508.44
  4. Step 4: Simplify right side
    663,945.44x = 345,919,349,159.03
  5. Step 5: Solve for x
    x = 345,919,349,159.03/663,945.44
  6. Step 6: Final answer
    x = 521,005.69

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1.5x scale

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.