Home / 869,338.88-1,199,745.24-487,390.40

Finding the Fourth Proportional to 869,338.88, 1,199,745.24 and 487,390.40

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Solution

The fourth proportional to 869,338.88, 1,199,745.24 and 487,390.40 is: 672,631.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,338.88 : 1,199,745.24 = 487,390.40 : x
  2. Step 2: Convert to fraction form
    869,338.88/1,199,745.24 = 487,390.40/x
  3. Step 3: Cross multiply
    869,338.88x = 1,199,745.24 × 487,390.40
  4. Step 4: Simplify right side
    869,338.88x = 584,744,312,421.70
  5. Step 5: Solve for x
    x = 584,744,312,421.70/869,338.88
  6. Step 6: Final answer
    x = 672,631.04

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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.