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Finding the Fourth Proportional to 579,817.12, 800,155.76 and 350,342.56

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Solution

The fourth proportional to 579,817.12, 800,155.76 and 350,342.56 is: 483,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,817.12 : 800,155.76 = 350,342.56 : x
  2. Step 2: Convert to fraction form
    579,817.12/800,155.76 = 350,342.56/x
  3. Step 3: Cross multiply
    579,817.12x = 800,155.76 × 350,342.56
  4. Step 4: Simplify right side
    579,817.12x = 280,328,617,357.15
  5. Step 5: Solve for x
    x = 280,328,617,357.15/579,817.12
  6. Step 6: Final answer
    x = 483,477.65

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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.