Home / 469,334,678.46-647,749,334.88-281,171,021.28

Finding the Fourth Proportional to 469,334,678.46, 647,749,334.88 and 281,171,021.28

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Solution

The fourth proportional to 469,334,678.46, 647,749,334.88 and 281,171,021.28 is: 388,056,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,334,678.46 : 647,749,334.88 = 281,171,021.28 : x
  2. Step 2: Convert to fraction form
    469,334,678.46/647,749,334.88 = 281,171,021.28/x
  3. Step 3: Cross multiply
    469,334,678.46x = 647,749,334.88 × 281,171,021.28
  4. Step 4: Simplify right side
    469,334,678.46x = 182,128,342,021,650,304
  5. Step 5: Solve for x
    x = 182,128,342,021,650,304/469,334,678.46
  6. Step 6: Final answer
    x = 388,056,434.74

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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.