Home / 579,342.35-869,253.57-312,789.57

Finding the Fourth Proportional to 579,342.35, 869,253.57 and 312,789.57

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Solution

The fourth proportional to 579,342.35, 869,253.57 and 312,789.57 is: 469,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,342.35 : 869,253.57 = 312,789.57 : x
  2. Step 2: Convert to fraction form
    579,342.35/869,253.57 = 312,789.57/x
  3. Step 3: Cross multiply
    579,342.35x = 869,253.57 × 312,789.57
  4. Step 4: Simplify right side
    579,342.35x = 271,893,450,381.27
  5. Step 5: Solve for x
    x = 271,893,450,381.27/579,342.35
  6. Step 6: Final answer
    x = 469,313.96

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1.5x scale

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.