Home / 579,327.13-869,230.50-312,774.15

Finding the Fourth Proportional to 579,327.13, 869,230.50 and 312,774.15

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Solution

The fourth proportional to 579,327.13, 869,230.50 and 312,774.15 is: 469,290.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,327.13 : 869,230.50 = 312,774.15 : x
  2. Step 2: Convert to fraction form
    579,327.13/869,230.50 = 312,774.15/x
  3. Step 3: Cross multiply
    579,327.13x = 869,230.50 × 312,774.15
  4. Step 4: Simplify right side
    579,327.13x = 271,872,832,964.65
  5. Step 5: Solve for x
    x = 271,872,832,964.65/579,327.13
  6. Step 6: Final answer
    x = 469,290.70

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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.