Home / 490,359,010.88-676,695,216.48-281,528,621.12

Finding the Fourth Proportional to 490,359,010.88, 676,695,216.48 and 281,528,621.12

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Solution

The fourth proportional to 490,359,010.88, 676,695,216.48 and 281,528,621.12 is: 388,509,371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,359,010.88 : 676,695,216.48 = 281,528,621.12 : x
  2. Step 2: Convert to fraction form
    490,359,010.88/676,695,216.48 = 281,528,621.12/x
  3. Step 3: Cross multiply
    490,359,010.88x = 676,695,216.48 × 281,528,621.12
  4. Step 4: Simplify right side
    490,359,010.88x = 190,509,071,214,114,304
  5. Step 5: Solve for x
    x = 190,509,071,214,114,304/490,359,010.88
  6. Step 6: Final answer
    x = 388,509,371.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.