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Finding the Fourth Proportional to 670,891,287.58, 923,776,648.16 and 668,954,185.14

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Solution

The fourth proportional to 670,891,287.58, 923,776,648.16 and 668,954,185.14 is: 921,109,375.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,891,287.58 : 923,776,648.16 = 668,954,185.14 : x
  2. Step 2: Convert to fraction form
    670,891,287.58/923,776,648.16 = 668,954,185.14/x
  3. Step 3: Cross multiply
    670,891,287.58x = 923,776,648.16 × 668,954,185.14
  4. Step 4: Simplify right side
    670,891,287.58x = 617,964,254,921,233,280
  5. Step 5: Solve for x
    x = 617,964,254,921,233,280/670,891,287.58
  6. Step 6: Final answer
    x = 921,109,375.49

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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.