Home / 904,911.20-1,355,299.52-431,928.70

Finding the Fourth Proportional to 904,911.20, 1,355,299.52 and 431,928.70

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Solution

The fourth proportional to 904,911.20, 1,355,299.52 and 431,928.70 is: 646,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,911.20 : 1,355,299.52 = 431,928.70 : x
  2. Step 2: Convert to fraction form
    904,911.20/1,355,299.52 = 431,928.70/x
  3. Step 3: Cross multiply
    904,911.20x = 1,355,299.52 × 431,928.70
  4. Step 4: Simplify right side
    904,911.20x = 585,392,759,784.22
  5. Step 5: Solve for x
    x = 585,392,759,784.22/904,911.20
  6. Step 6: Final answer
    x = 646,906.30

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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.