Home / 921,842.40-1,382,893.20-290,690.40

Finding the Fourth Proportional to 921,842.40, 1,382,893.20 and 290,690.40

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Solution

The fourth proportional to 921,842.40, 1,382,893.20 and 290,690.40 is: 436,076.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,842.40 : 1,382,893.20 = 290,690.40 : x
  2. Step 2: Convert to fraction form
    921,842.40/1,382,893.20 = 290,690.40/x
  3. Step 3: Cross multiply
    921,842.40x = 1,382,893.20 × 290,690.40
  4. Step 4: Simplify right side
    921,842.40x = 401,993,777,465.28
  5. Step 5: Solve for x
    x = 401,993,777,465.28/921,842.40
  6. Step 6: Final answer
    x = 436,076.47

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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.