Home / 645,788.60-968,767.54-213,362.40

Finding the Fourth Proportional to 645,788.60, 968,767.54 and 213,362.40

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Solution

The fourth proportional to 645,788.60, 968,767.54 and 213,362.40 is: 320,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,788.60 : 968,767.54 = 213,362.40 : x
  2. Step 2: Convert to fraction form
    645,788.60/968,767.54 = 213,362.40/x
  3. Step 3: Cross multiply
    645,788.60x = 968,767.54 × 213,362.40
  4. Step 4: Simplify right side
    645,788.60x = 206,698,567,376.50
  5. Step 5: Solve for x
    x = 206,698,567,376.50/645,788.60
  6. Step 6: Final answer
    x = 320,071.56

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Double scale
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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.