Home / 671,121.32-926,091.80-395,436.20

Finding the Fourth Proportional to 671,121.32, 926,091.80 and 395,436.20

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Solution

The fourth proportional to 671,121.32, 926,091.80 and 395,436.20 is: 545,669.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,121.32 : 926,091.80 = 395,436.20 : x
  2. Step 2: Convert to fraction form
    671,121.32/926,091.80 = 395,436.20/x
  3. Step 3: Cross multiply
    671,121.32x = 926,091.80 × 395,436.20
  4. Step 4: Simplify right side
    671,121.32x = 366,210,222,243.16
  5. Step 5: Solve for x
    x = 366,210,222,243.16/671,121.32
  6. Step 6: Final answer
    x = 545,669.18

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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.