Home / 1,071,190.92-1,478,289.66-641,388.90

Finding the Fourth Proportional to 1,071,190.92, 1,478,289.66 and 641,388.90

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Solution

The fourth proportional to 1,071,190.92, 1,478,289.66 and 641,388.90 is: 885,144.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,190.92 : 1,478,289.66 = 641,388.90 : x
  2. Step 2: Convert to fraction form
    1,071,190.92/1,478,289.66 = 641,388.90/x
  3. Step 3: Cross multiply
    1,071,190.92x = 1,478,289.66 × 641,388.90
  4. Step 4: Simplify right side
    1,071,190.92x = 948,158,578,908.77
  5. Step 5: Solve for x
    x = 948,158,578,908.77/1,071,190.92
  6. Step 6: Final answer
    x = 885,144.34

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Double scale
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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.