Home / 879,145.98-1,318,660.64-399,259.86

Finding the Fourth Proportional to 879,145.98, 1,318,660.64 and 399,259.86

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Solution

The fourth proportional to 879,145.98, 1,318,660.64 and 399,259.86 is: 598,863.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,145.98 : 1,318,660.64 = 399,259.86 : x
  2. Step 2: Convert to fraction form
    879,145.98/1,318,660.64 = 399,259.86/x
  3. Step 3: Cross multiply
    879,145.98x = 1,318,660.64 × 399,259.86
  4. Step 4: Simplify right side
    879,145.98x = 526,488,262,513.91
  5. Step 5: Solve for x
    x = 526,488,262,513.91/879,145.98
  6. Step 6: Final answer
    x = 598,863.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.