Home / 656,438.12-905,884.60-354,632.12

Finding the Fourth Proportional to 656,438.12, 905,884.60 and 354,632.12

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Solution

The fourth proportional to 656,438.12, 905,884.60 and 354,632.12 is: 489,392.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,438.12 : 905,884.60 = 354,632.12 : x
  2. Step 2: Convert to fraction form
    656,438.12/905,884.60 = 354,632.12/x
  3. Step 3: Cross multiply
    656,438.12x = 905,884.60 × 354,632.12
  4. Step 4: Simplify right side
    656,438.12x = 321,255,776,173.35
  5. Step 5: Solve for x
    x = 321,255,776,173.35/656,438.12
  6. Step 6: Final answer
    x = 489,392.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.