Home / 853,257.51-1,280,586.11-432,653.67

Finding the Fourth Proportional to 853,257.51, 1,280,586.11 and 432,653.67

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Solution

The fourth proportional to 853,257.51, 1,280,586.11 and 432,653.67 is: 649,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,257.51 : 1,280,586.11 = 432,653.67 : x
  2. Step 2: Convert to fraction form
    853,257.51/1,280,586.11 = 432,653.67/x
  3. Step 3: Cross multiply
    853,257.51x = 1,280,586.11 × 432,653.67
  4. Step 4: Simplify right side
    853,257.51x = 554,050,278,079.26
  5. Step 5: Solve for x
    x = 554,050,278,079.26/853,257.51
  6. Step 6: Final answer
    x = 649,335.37

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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.