Home / 505,197,085.20-757,795,627.80-287,518,851.60

Finding the Fourth Proportional to 505,197,085.20, 757,795,627.80 and 287,518,851.60

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Solution

The fourth proportional to 505,197,085.20, 757,795,627.80 and 287,518,851.60 is: 431,278,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,197,085.20 : 757,795,627.80 = 287,518,851.60 : x
  2. Step 2: Convert to fraction form
    505,197,085.20/757,795,627.80 = 287,518,851.60/x
  3. Step 3: Cross multiply
    505,197,085.20x = 757,795,627.80 × 287,518,851.60
  4. Step 4: Simplify right side
    505,197,085.20x = 217,880,528,652,557,024
  5. Step 5: Solve for x
    x = 217,880,528,652,557,024/505,197,085.20
  6. Step 6: Final answer
    x = 431,278,277.40

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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.