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Finding the Fourth Proportional to 587,999.20, 881,998.80 and 388,933.60

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Solution

The fourth proportional to 587,999.20, 881,998.80 and 388,933.60 is: 583,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,999.20 : 881,998.80 = 388,933.60 : x
  2. Step 2: Convert to fraction form
    587,999.20/881,998.80 = 388,933.60/x
  3. Step 3: Cross multiply
    587,999.20x = 881,998.80 × 388,933.60
  4. Step 4: Simplify right side
    587,999.20x = 343,038,968,479.68
  5. Step 5: Solve for x
    x = 343,038,968,479.68/587,999.20
  6. Step 6: Final answer
    x = 583,400.40

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1.5x scale

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.