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Finding the Fourth Proportional to 1,019,947,339.80, 1,529,921,009.70 and 938,318,002.20

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Solution

The fourth proportional to 1,019,947,339.80, 1,529,921,009.70 and 938,318,002.20 is: 1,407,477,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,947,339.80 : 1,529,921,009.70 = 938,318,002.20 : x
  2. Step 2: Convert to fraction form
    1,019,947,339.80/1,529,921,009.70 = 938,318,002.20/x
  3. Step 3: Cross multiply
    1,019,947,339.80x = 1,529,921,009.70 × 938,318,002.20
  4. Step 4: Simplify right side
    1,019,947,339.80x = 1,435,552,425,345,510,912
  5. Step 5: Solve for x
    x = 1,435,552,425,345,510,912/1,019,947,339.80
  6. Step 6: Final answer
    x = 1,407,477,003.30

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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.