Finding the Fourth Proportional to 9,199,448,789.36, 12,695,239,329.24 and 5,239,518,923.12
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Solution
The fourth proportional to 9,199,448,789.36, 12,695,239,329.24 and 5,239,518,923.12 is: 7,230,536,113.86
Step by Step Solution
- Step 1: Write the proportion equation
9,199,448,789.36 : 12,695,239,329.24 = 5,239,518,923.12 : x - Step 2: Convert to fraction form
9,199,448,789.36/12,695,239,329.24 = 5,239,518,923.12/x - Step 3: Cross multiply
9,199,448,789.36x = 12,695,239,329.24 × 5,239,518,923.12 - Step 4: Simplify right side
9,199,448,789.36x = 66,516,946,699,090,231,296 - Step 5: Solve for x
x = 66,516,946,699,090,231,296/9,199,448,789.36 - Step 6: Final answer
x = 7,230,536,113.86
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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.