Home / 1,284,809.40-1,927,214.10-398,230.20

Finding the Fourth Proportional to 1,284,809.40, 1,927,214.10 and 398,230.20

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Solution

The fourth proportional to 1,284,809.40, 1,927,214.10 and 398,230.20 is: 597,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,809.40 : 1,927,214.10 = 398,230.20 : x
  2. Step 2: Convert to fraction form
    1,284,809.40/1,927,214.10 = 398,230.20/x
  3. Step 3: Cross multiply
    1,284,809.40x = 1,927,214.10 × 398,230.20
  4. Step 4: Simplify right side
    1,284,809.40x = 767,474,856,485.82
  5. Step 5: Solve for x
    x = 767,474,856,485.82/1,284,809.40
  6. Step 6: Final answer
    x = 597,345.30

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Double scale
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Similar ratio
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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.