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Finding the Fourth Proportional to 808,733,819.10, 1,213,100,728.65 and 776,989,076.70

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Solution

The fourth proportional to 808,733,819.10, 1,213,100,728.65 and 776,989,076.70 is: 1,165,483,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,733,819.10 : 1,213,100,728.65 = 776,989,076.70 : x
  2. Step 2: Convert to fraction form
    808,733,819.10/1,213,100,728.65 = 776,989,076.70/x
  3. Step 3: Cross multiply
    808,733,819.10x = 1,213,100,728.65 × 776,989,076.70
  4. Step 4: Simplify right side
    808,733,819.10x = 942,566,015,097,860,864
  5. Step 5: Solve for x
    x = 942,566,015,097,860,864/808,733,819.10
  6. Step 6: Final answer
    x = 1,165,483,615.05

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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.