Home / 921,394.79-1,382,162.15-313,994.33

Finding the Fourth Proportional to 921,394.79, 1,382,162.15 and 313,994.33

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Solution

The fourth proportional to 921,394.79, 1,382,162.15 and 313,994.33 is: 471,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,394.79 : 1,382,162.15 = 313,994.33 : x
  2. Step 2: Convert to fraction form
    921,394.79/1,382,162.15 = 313,994.33/x
  3. Step 3: Cross multiply
    921,394.79x = 1,382,162.15 × 313,994.33
  4. Step 4: Simplify right side
    921,394.79x = 433,991,072,114.79
  5. Step 5: Solve for x
    x = 433,991,072,114.79/921,394.79
  6. Step 6: Final answer
    x = 471,015.33

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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.