Home / 1,211,346.40-1,817,019.60-369,896.80

Finding the Fourth Proportional to 1,211,346.40, 1,817,019.60 and 369,896.80

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Solution

The fourth proportional to 1,211,346.40, 1,817,019.60 and 369,896.80 is: 554,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,346.40 : 1,817,019.60 = 369,896.80 : x
  2. Step 2: Convert to fraction form
    1,211,346.40/1,817,019.60 = 369,896.80/x
  3. Step 3: Cross multiply
    1,211,346.40x = 1,817,019.60 × 369,896.80
  4. Step 4: Simplify right side
    1,211,346.40x = 672,109,735,577.28
  5. Step 5: Solve for x
    x = 672,109,735,577.28/1,211,346.40
  6. Step 6: Final answer
    x = 554,845.20

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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.