Home / 643,266.40-964,899.60-222,498.40

Finding the Fourth Proportional to 643,266.40, 964,899.60 and 222,498.40

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Solution

The fourth proportional to 643,266.40, 964,899.60 and 222,498.40 is: 333,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,266.40 : 964,899.60 = 222,498.40 : x
  2. Step 2: Convert to fraction form
    643,266.40/964,899.60 = 222,498.40/x
  3. Step 3: Cross multiply
    643,266.40x = 964,899.60 × 222,498.40
  4. Step 4: Simplify right side
    643,266.40x = 214,688,617,160.64
  5. Step 5: Solve for x
    x = 214,688,617,160.64/643,266.40
  6. Step 6: Final answer
    x = 333,747.60

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Half scale
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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.