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Finding the Fourth Proportional to 960,819,662.76, 1,325,933,088.42 and 520,786,812.84

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Solution

The fourth proportional to 960,819,662.76, 1,325,933,088.42 and 520,786,812.84 is: 718,686,860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    960,819,662.76 : 1,325,933,088.42 = 520,786,812.84 : x
  2. Step 2: Convert to fraction form
    960,819,662.76/1,325,933,088.42 = 520,786,812.84/x
  3. Step 3: Cross multiply
    960,819,662.76x = 1,325,933,088.42 × 520,786,812.84
  4. Step 4: Simplify right side
    960,819,662.76x = 690,528,467,157,349,760
  5. Step 5: Solve for x
    x = 690,528,467,157,349,760/960,819,662.76
  6. Step 6: Final answer
    x = 718,686,860.73

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Double scale
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1.5x scale

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.