Home / 920,853.48-1,381,396.86-256,005.48

Finding the Fourth Proportional to 920,853.48, 1,381,396.86 and 256,005.48

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Solution

The fourth proportional to 920,853.48, 1,381,396.86 and 256,005.48 is: 384,040.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,853.48 : 1,381,396.86 = 256,005.48 : x
  2. Step 2: Convert to fraction form
    920,853.48/1,381,396.86 = 256,005.48/x
  3. Step 3: Cross multiply
    920,853.48x = 1,381,396.86 × 256,005.48
  4. Step 4: Simplify right side
    920,853.48x = 353,645,166,214.79
  5. Step 5: Solve for x
    x = 353,645,166,214.79/920,853.48
  6. Step 6: Final answer
    x = 384,040.65

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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.