Home / 659,621.70-989,432.55-344,037.60

Finding the Fourth Proportional to 659,621.70, 989,432.55 and 344,037.60

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Solution

The fourth proportional to 659,621.70, 989,432.55 and 344,037.60 is: 516,056.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,621.70 : 989,432.55 = 344,037.60 : x
  2. Step 2: Convert to fraction form
    659,621.70/989,432.55 = 344,037.60/x
  3. Step 3: Cross multiply
    659,621.70x = 989,432.55 × 344,037.60
  4. Step 4: Simplify right side
    659,621.70x = 340,401,999,863.88
  5. Step 5: Solve for x
    x = 340,401,999,863.88/659,621.70
  6. Step 6: Final answer
    x = 516,056.40

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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.