Home / 921,400.23-1,382,170.32-313,999.77

Finding the Fourth Proportional to 921,400.23, 1,382,170.32 and 313,999.77

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Solution

The fourth proportional to 921,400.23, 1,382,170.32 and 313,999.77 is: 471,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,400.23 : 1,382,170.32 = 313,999.77 : x
  2. Step 2: Convert to fraction form
    921,400.23/1,382,170.32 = 313,999.77/x
  3. Step 3: Cross multiply
    921,400.23x = 1,382,170.32 × 313,999.77
  4. Step 4: Simplify right side
    921,400.23x = 434,001,162,580.83
  5. Step 5: Solve for x
    x = 434,001,162,580.83/921,400.23
  6. Step 6: Final answer
    x = 471,023.50

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Double scale
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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.