Home / 438,821.60-659,614.80-430,527.20

Finding the Fourth Proportional to 438,821.60, 659,614.80 and 430,527.20

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Solution

The fourth proportional to 438,821.60, 659,614.80 and 430,527.20 is: 647,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,821.60 : 659,614.80 = 430,527.20 : x
  2. Step 2: Convert to fraction form
    438,821.60/659,614.80 = 430,527.20/x
  3. Step 3: Cross multiply
    438,821.60x = 659,614.80 × 430,527.20
  4. Step 4: Simplify right side
    438,821.60x = 283,982,112,922.56
  5. Step 5: Solve for x
    x = 283,982,112,922.56/438,821.60
  6. Step 6: Final answer
    x = 647,147.07

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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.