Home / 393,632,706.48-543,213,114.21-212,579,670.51

Finding the Fourth Proportional to 393,632,706.48, 543,213,114.21 and 212,579,670.51

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Solution

The fourth proportional to 393,632,706.48, 543,213,114.21 and 212,579,670.51 is: 293,359,934.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,632,706.48 : 543,213,114.21 = 212,579,670.51 : x
  2. Step 2: Convert to fraction form
    393,632,706.48/543,213,114.21 = 212,579,670.51/x
  3. Step 3: Cross multiply
    393,632,706.48x = 543,213,114.21 × 212,579,670.51
  4. Step 4: Simplify right side
    393,632,706.48x = 115,476,064,835,472,800
  5. Step 5: Solve for x
    x = 115,476,064,835,472,800/393,632,706.48
  6. Step 6: Final answer
    x = 293,359,934.11

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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.