Home / 742,945.72-1,114,438.56-210,411.76

Finding the Fourth Proportional to 742,945.72, 1,114,438.56 and 210,411.76

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Solution

The fourth proportional to 742,945.72, 1,114,438.56 and 210,411.76 is: 315,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,945.72 : 1,114,438.56 = 210,411.76 : x
  2. Step 2: Convert to fraction form
    742,945.72/1,114,438.56 = 210,411.76/x
  3. Step 3: Cross multiply
    742,945.72x = 1,114,438.56 × 210,411.76
  4. Step 4: Simplify right side
    742,945.72x = 234,490,978,821.47
  5. Step 5: Solve for x
    x = 234,490,978,821.47/742,945.72
  6. Step 6: Final answer
    x = 315,623.30

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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.