Home / 487,096,571.42-672,290,922.48-288,968,040.17

Finding the Fourth Proportional to 487,096,571.42, 672,290,922.48 and 288,968,040.17

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Solution

The fourth proportional to 487,096,571.42, 672,290,922.48 and 288,968,040.17 is: 398,833,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,096,571.42 : 672,290,922.48 = 288,968,040.17 : x
  2. Step 2: Convert to fraction form
    487,096,571.42/672,290,922.48 = 288,968,040.17/x
  3. Step 3: Cross multiply
    487,096,571.42x = 672,290,922.48 × 288,968,040.17
  4. Step 4: Simplify right side
    487,096,571.42x = 194,270,590,292,832,768
  5. Step 5: Solve for x
    x = 194,270,590,292,832,768/487,096,571.42
  6. Step 6: Final answer
    x = 398,833,828.22

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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.