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Finding the Fourth Proportional to 522,003.80, 783,005.70 and 445,896.20

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Solution

The fourth proportional to 522,003.80, 783,005.70 and 445,896.20 is: 668,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,003.80 : 783,005.70 = 445,896.20 : x
  2. Step 2: Convert to fraction form
    522,003.80/783,005.70 = 445,896.20/x
  3. Step 3: Cross multiply
    522,003.80x = 783,005.70 × 445,896.20
  4. Step 4: Simplify right side
    522,003.80x = 349,139,266,208.34
  5. Step 5: Solve for x
    x = 349,139,266,208.34/522,003.80
  6. Step 6: Final answer
    x = 668,844.30

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Similar ratio
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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.