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Finding the Fourth Proportional to 723,779.90, 998,712.82 and 433,321.87

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Solution

The fourth proportional to 723,779.90, 998,712.82 and 433,321.87 is: 597,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,779.90 : 998,712.82 = 433,321.87 : x
  2. Step 2: Convert to fraction form
    723,779.90/998,712.82 = 433,321.87/x
  3. Step 3: Cross multiply
    723,779.90x = 998,712.82 × 433,321.87
  4. Step 4: Simplify right side
    723,779.90x = 432,764,107,838.68
  5. Step 5: Solve for x
    x = 432,764,107,838.68/723,779.90
  6. Step 6: Final answer
    x = 597,922.25

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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.