Home / 739,450.09-1,020,441.12-399,918.34

Finding the Fourth Proportional to 739,450.09, 1,020,441.12 and 399,918.34

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Solution

The fourth proportional to 739,450.09, 1,020,441.12 and 399,918.34 is: 551,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,450.09 : 1,020,441.12 = 399,918.34 : x
  2. Step 2: Convert to fraction form
    739,450.09/1,020,441.12 = 399,918.34/x
  3. Step 3: Cross multiply
    739,450.09x = 1,020,441.12 × 399,918.34
  4. Step 4: Simplify right side
    739,450.09x = 408,093,111,676.34
  5. Step 5: Solve for x
    x = 408,093,111,676.34/739,450.09
  6. Step 6: Final answer
    x = 551,887.30

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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.