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Finding the Fourth Proportional to 535,907.72, 739,525.49 and 318,125.70

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Solution

The fourth proportional to 535,907.72, 739,525.49 and 318,125.70 is: 438,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,907.72 : 739,525.49 = 318,125.70 : x
  2. Step 2: Convert to fraction form
    535,907.72/739,525.49 = 318,125.70/x
  3. Step 3: Cross multiply
    535,907.72x = 739,525.49 × 318,125.70
  4. Step 4: Simplify right side
    535,907.72x = 235,262,067,645.81
  5. Step 5: Solve for x
    x = 235,262,067,645.81/535,907.72
  6. Step 6: Final answer
    x = 438,997.35

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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.