Home / 884,358.90-1,220,403.60-491,889.21

Finding the Fourth Proportional to 884,358.90, 1,220,403.60 and 491,889.21

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Solution

The fourth proportional to 884,358.90, 1,220,403.60 and 491,889.21 is: 678,800.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,358.90 : 1,220,403.60 = 491,889.21 : x
  2. Step 2: Convert to fraction form
    884,358.90/1,220,403.60 = 491,889.21/x
  3. Step 3: Cross multiply
    884,358.90x = 1,220,403.60 × 491,889.21
  4. Step 4: Simplify right side
    884,358.90x = 600,303,358,108.64
  5. Step 5: Solve for x
    x = 600,303,358,108.64/884,358.90
  6. Step 6: Final answer
    x = 678,800.61

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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.