Finding the Fourth Proportional to 1,210,771,249.68, 1,670,864,309.25 and 653,854,247.53
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Solution
The fourth proportional to 1,210,771,249.68, 1,670,864,309.25 and 653,854,247.53 is: 902,318,853.32
Step by Step Solution
- Step 1: Write the proportion equation
1,210,771,249.68 : 1,670,864,309.25 = 653,854,247.53 : x - Step 2: Convert to fraction form
1,210,771,249.68/1,670,864,309.25 = 653,854,247.53/x - Step 3: Cross multiply
1,210,771,249.68x = 1,670,864,309.25 × 653,854,247.53 - Step 4: Simplify right side
1,210,771,249.68x = 1,092,501,725,649,391,872 - Step 5: Solve for x
x = 1,092,501,725,649,391,872/1,210,771,249.68 - Step 6: Final answer
x = 902,318,853.32
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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.