Home / 439,627.20-659,440.80-368,768.40

Finding the Fourth Proportional to 439,627.20, 659,440.80 and 368,768.40

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Solution

The fourth proportional to 439,627.20, 659,440.80 and 368,768.40 is: 553,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,627.20 : 659,440.80 = 368,768.40 : x
  2. Step 2: Convert to fraction form
    439,627.20/659,440.80 = 368,768.40/x
  3. Step 3: Cross multiply
    439,627.20x = 659,440.80 × 368,768.40
  4. Step 4: Simplify right side
    439,627.20x = 243,180,928,710.72
  5. Step 5: Solve for x
    x = 243,180,928,710.72/439,627.20
  6. Step 6: Final answer
    x = 553,152.60

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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.