Home / 434,077.60-649,849.20-309,661.60

Finding the Fourth Proportional to 434,077.60, 649,849.20 and 309,661.60

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Solution

The fourth proportional to 434,077.60, 649,849.20 and 309,661.60 is: 463,588.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,077.60 : 649,849.20 = 309,661.60 : x
  2. Step 2: Convert to fraction form
    434,077.60/649,849.20 = 309,661.60/x
  3. Step 3: Cross multiply
    434,077.60x = 649,849.20 × 309,661.60
  4. Step 4: Simplify right side
    434,077.60x = 201,233,343,030.72
  5. Step 5: Solve for x
    x = 201,233,343,030.72/434,077.60
  6. Step 6: Final answer
    x = 463,588.41

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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.