Home / 658,353,746,078.80-987,530,619,118.20-211,218,845,707.60

Finding the Fourth Proportional to 658,353,746,078.80, 987,530,619,118.20 and 211,218,845,707.60

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Solution

The fourth proportional to 658,353,746,078.80, 987,530,619,118.20 and 211,218,845,707.60 is: 316,828,268,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,353,746,078.80 : 987,530,619,118.20 = 211,218,845,707.60 : x
  2. Step 2: Convert to fraction form
    658,353,746,078.80/987,530,619,118.20 = 211,218,845,707.60/x
  3. Step 3: Cross multiply
    658,353,746,078.80x = 987,530,619,118.20 × 211,218,845,707.60
  4. Step 4: Simplify right side
    658,353,746,078.80x = 208,585,077,471,057,799,020,544
  5. Step 5: Solve for x
    x = 208,585,077,471,057,799,020,544/658,353,746,078.80
  6. Step 6: Final answer
    x = 316,828,268,561.40

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.