Home / 487,096,571.46-672,290,922.42-288,968,040.21

Finding the Fourth Proportional to 487,096,571.46, 672,290,922.42 and 288,968,040.21

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Solution

The fourth proportional to 487,096,571.46, 672,290,922.42 and 288,968,040.21 is: 398,833,828.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,096,571.46 : 672,290,922.42 = 288,968,040.21 : x
  2. Step 2: Convert to fraction form
    487,096,571.46/672,290,922.42 = 288,968,040.21/x
  3. Step 3: Cross multiply
    487,096,571.46x = 672,290,922.42 × 288,968,040.21
  4. Step 4: Simplify right side
    487,096,571.46x = 194,270,590,302,680,512
  5. Step 5: Solve for x
    x = 194,270,590,302,680,512/487,096,571.46
  6. Step 6: Final answer
    x = 398,833,828.21

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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.