Home / 899,285.94-1,240,977.60-491,401.80

Finding the Fourth Proportional to 899,285.94, 1,240,977.60 and 491,401.80

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Solution

The fourth proportional to 899,285.94, 1,240,977.60 and 491,401.80 is: 678,114.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,285.94 : 1,240,977.60 = 491,401.80 : x
  2. Step 2: Convert to fraction form
    899,285.94/1,240,977.60 = 491,401.80/x
  3. Step 3: Cross multiply
    899,285.94x = 1,240,977.60 × 491,401.80
  4. Step 4: Simplify right side
    899,285.94x = 609,818,626,399.68
  5. Step 5: Solve for x
    x = 609,818,626,399.68/899,285.94
  6. Step 6: Final answer
    x = 678,114.27

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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.