Home / 899,188.63-1,240,865.63-491,281.69

Finding the Fourth Proportional to 899,188.63, 1,240,865.63 and 491,281.69

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Solution

The fourth proportional to 899,188.63, 1,240,865.63 and 491,281.69 is: 677,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,188.63 : 1,240,865.63 = 491,281.69 : x
  2. Step 2: Convert to fraction form
    899,188.63/1,240,865.63 = 491,281.69/x
  3. Step 3: Cross multiply
    899,188.63x = 1,240,865.63 × 491,281.69
  4. Step 4: Simplify right side
    899,188.63x = 609,614,561,312.91
  5. Step 5: Solve for x
    x = 609,614,561,312.91/899,188.63
  6. Step 6: Final answer
    x = 677,960.71

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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.