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Finding the Fourth Proportional to 1,090,662,647.20, 1,635,993,970.80 and 847,006,352.80

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Solution

The fourth proportional to 1,090,662,647.20, 1,635,993,970.80 and 847,006,352.80 is: 1,270,509,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,662,647.20 : 1,635,993,970.80 = 847,006,352.80 : x
  2. Step 2: Convert to fraction form
    1,090,662,647.20/1,635,993,970.80 = 847,006,352.80/x
  3. Step 3: Cross multiply
    1,090,662,647.20x = 1,635,993,970.80 × 847,006,352.80
  4. Step 4: Simplify right side
    1,090,662,647.20x = 1,385,697,286,410,097,664
  5. Step 5: Solve for x
    x = 1,385,697,286,410,097,664/1,090,662,647.20
  6. Step 6: Final answer
    x = 1,270,509,529.20

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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.