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Finding the Fourth Proportional to 978,615,457.60, 1,467,923,186.40 and 940,992,059.20

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Solution

The fourth proportional to 978,615,457.60, 1,467,923,186.40 and 940,992,059.20 is: 1,411,488,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,615,457.60 : 1,467,923,186.40 = 940,992,059.20 : x
  2. Step 2: Convert to fraction form
    978,615,457.60/1,467,923,186.40 = 940,992,059.20/x
  3. Step 3: Cross multiply
    978,615,457.60x = 1,467,923,186.40 × 940,992,059.20
  4. Step 4: Simplify right side
    978,615,457.60x = 1,381,304,061,917,961,472
  5. Step 5: Solve for x
    x = 1,381,304,061,917,961,472/978,615,457.60
  6. Step 6: Final answer
    x = 1,411,488,088.80

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1.5x scale

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.