Home / 742,972.20-1,114,458.30-210,486.30

Finding the Fourth Proportional to 742,972.20, 1,114,458.30 and 210,486.30

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Solution

The fourth proportional to 742,972.20, 1,114,458.30 and 210,486.30 is: 315,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,972.20 : 1,114,458.30 = 210,486.30 : x
  2. Step 2: Convert to fraction form
    742,972.20/1,114,458.30 = 210,486.30/x
  3. Step 3: Cross multiply
    742,972.20x = 1,114,458.30 × 210,486.30
  4. Step 4: Simplify right side
    742,972.20x = 234,578,204,071.29
  5. Step 5: Solve for x
    x = 234,578,204,071.29/742,972.20
  6. Step 6: Final answer
    x = 315,729.45

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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.