Home / 439,827.60-659,741.40-287,612.40

Finding the Fourth Proportional to 439,827.60, 659,741.40 and 287,612.40

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Solution

The fourth proportional to 439,827.60, 659,741.40 and 287,612.40 is: 431,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,827.60 : 659,741.40 = 287,612.40 : x
  2. Step 2: Convert to fraction form
    439,827.60/659,741.40 = 287,612.40/x
  3. Step 3: Cross multiply
    439,827.60x = 659,741.40 × 287,612.40
  4. Step 4: Simplify right side
    439,827.60x = 189,749,807,433.36
  5. Step 5: Solve for x
    x = 189,749,807,433.36/439,827.60
  6. Step 6: Final answer
    x = 431,418.60

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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.