Home / 1,322,342.40-1,983,513.60-423,782.40

Finding the Fourth Proportional to 1,322,342.40, 1,983,513.60 and 423,782.40

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Solution

The fourth proportional to 1,322,342.40, 1,983,513.60 and 423,782.40 is: 635,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,342.40 : 1,983,513.60 = 423,782.40 : x
  2. Step 2: Convert to fraction form
    1,322,342.40/1,983,513.60 = 423,782.40/x
  3. Step 3: Cross multiply
    1,322,342.40x = 1,983,513.60 × 423,782.40
  4. Step 4: Simplify right side
    1,322,342.40x = 840,578,153,840.64
  5. Step 5: Solve for x
    x = 840,578,153,840.64/1,322,342.40
  6. Step 6: Final answer
    x = 635,673.60

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Double scale
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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.