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Finding the Fourth Proportional to 653,322.05, 899,498.90 and 557,443.97

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Solution

The fourth proportional to 653,322.05, 899,498.90 and 557,443.97 is: 767,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,322.05 : 899,498.90 = 557,443.97 : x
  2. Step 2: Convert to fraction form
    653,322.05/899,498.90 = 557,443.97/x
  3. Step 3: Cross multiply
    653,322.05x = 899,498.90 × 557,443.97
  4. Step 4: Simplify right side
    653,322.05x = 501,420,237,826.63
  5. Step 5: Solve for x
    x = 501,420,237,826.63/653,322.05
  6. Step 6: Final answer
    x = 767,493.21

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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.