Home / 993,840.30-1,490,760.45-328,905.90

Finding the Fourth Proportional to 993,840.30, 1,490,760.45 and 328,905.90

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Solution

The fourth proportional to 993,840.30, 1,490,760.45 and 328,905.90 is: 493,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,840.30 : 1,490,760.45 = 328,905.90 : x
  2. Step 2: Convert to fraction form
    993,840.30/1,490,760.45 = 328,905.90/x
  3. Step 3: Cross multiply
    993,840.30x = 1,490,760.45 × 328,905.90
  4. Step 4: Simplify right side
    993,840.30x = 490,319,907,491.66
  5. Step 5: Solve for x
    x = 490,319,907,491.66/993,840.30
  6. Step 6: Final answer
    x = 493,358.85

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Double scale
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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.