Home / 439,544.40-659,316.60-421,829.70

Finding the Fourth Proportional to 439,544.40, 659,316.60 and 421,829.70

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Solution

The fourth proportional to 439,544.40, 659,316.60 and 421,829.70 is: 632,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,544.40 : 659,316.60 = 421,829.70 : x
  2. Step 2: Convert to fraction form
    439,544.40/659,316.60 = 421,829.70/x
  3. Step 3: Cross multiply
    439,544.40x = 659,316.60 × 421,829.70
  4. Step 4: Simplify right side
    439,544.40x = 278,119,323,583.02
  5. Step 5: Solve for x
    x = 278,119,323,583.02/439,544.40
  6. Step 6: Final answer
    x = 632,744.55

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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.