Home / 899,188.32-1,240,865.40-491,281.40

Finding the Fourth Proportional to 899,188.32, 1,240,865.40 and 491,281.40

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Solution

The fourth proportional to 899,188.32, 1,240,865.40 and 491,281.40 is: 677,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,188.32 : 1,240,865.40 = 491,281.40 : x
  2. Step 2: Convert to fraction form
    899,188.32/1,240,865.40 = 491,281.40/x
  3. Step 3: Cross multiply
    899,188.32x = 1,240,865.40 × 491,281.40
  4. Step 4: Simplify right side
    899,188.32x = 609,614,090,923.56
  5. Step 5: Solve for x
    x = 609,614,090,923.56/899,188.32
  6. Step 6: Final answer
    x = 677,960.42

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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.