Home / 505,490,048.40-758,235,072.60-287,055,987.60

Finding the Fourth Proportional to 505,490,048.40, 758,235,072.60 and 287,055,987.60

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Solution

The fourth proportional to 505,490,048.40, 758,235,072.60 and 287,055,987.60 is: 430,583,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,490,048.40 : 758,235,072.60 = 287,055,987.60 : x
  2. Step 2: Convert to fraction form
    505,490,048.40/758,235,072.60 = 287,055,987.60/x
  3. Step 3: Cross multiply
    505,490,048.40x = 758,235,072.60 × 287,055,987.60
  4. Step 4: Simplify right side
    505,490,048.40x = 217,655,917,598,150,720
  5. Step 5: Solve for x
    x = 217,655,917,598,150,720/505,490,048.40
  6. Step 6: Final answer
    x = 430,583,981.40

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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.