Home / 720,809,100,894.76-994,717,544,268.18-391,212,144,141.64

Finding the Fourth Proportional to 720,809,100,894.76, 994,717,544,268.18 and 391,212,144,141.64

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Solution

The fourth proportional to 720,809,100,894.76, 994,717,544,268.18 and 391,212,144,141.64 is: 539,873,293,532.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,894.76 : 994,717,544,268.18 = 391,212,144,141.64 : x
  2. Step 2: Convert to fraction form
    720,809,100,894.76/994,717,544,268.18 = 391,212,144,141.64/x
  3. Step 3: Cross multiply
    720,809,100,894.76x = 994,717,544,268.18 × 391,212,144,141.64
  4. Step 4: Simplify right side
    720,809,100,894.76x = 389,145,583,308,461,450,461,184
  5. Step 5: Solve for x
    x = 389,145,583,308,461,450,461,184/720,809,100,894.76
  6. Step 6: Final answer
    x = 539,873,293,532.79

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Double scale
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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.