Finding the Fourth Proportional to 1,172,775,398.04, 1,617,686,338.14 and 720,455,431.32
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Solution
The fourth proportional to 1,172,775,398.04, 1,617,686,338.14 and 720,455,431.32 is: 993,771,621.09
Step by Step Solution
- Step 1: Write the proportion equation
1,172,775,398.04 : 1,617,686,338.14 = 720,455,431.32 : x - Step 2: Convert to fraction form
1,172,775,398.04/1,617,686,338.14 = 720,455,431.32/x - Step 3: Cross multiply
1,172,775,398.04x = 1,617,686,338.14 × 720,455,431.32 - Step 4: Simplify right side
1,172,775,398.04x = 1,165,470,908,485,125,120 - Step 5: Solve for x
x = 1,165,470,908,485,125,120/1,172,775,398.04 - Step 6: Final answer
x = 993,771,621.09
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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.