Home / 918,345.92-1,377,619.35-311,572.34

Finding the Fourth Proportional to 918,345.92, 1,377,619.35 and 311,572.34

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Solution

The fourth proportional to 918,345.92, 1,377,619.35 and 311,572.34 is: 467,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,345.92 : 1,377,619.35 = 311,572.34 : x
  2. Step 2: Convert to fraction form
    918,345.92/1,377,619.35 = 311,572.34/x
  3. Step 3: Cross multiply
    918,345.92x = 1,377,619.35 × 311,572.34
  4. Step 4: Simplify right side
    918,345.92x = 429,228,077,620.68
  5. Step 5: Solve for x
    x = 429,228,077,620.68/918,345.92
  6. Step 6: Final answer
    x = 467,392.59

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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.