Finding the Fourth Proportional to 816,854,358.21, 1,127,266,208.70 and 445,578,040.77
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Solution
The fourth proportional to 816,854,358.21, 1,127,266,208.70 and 445,578,040.77 is: 614,901,620.65
Step by Step Solution
- Step 1: Write the proportion equation
816,854,358.21 : 1,127,266,208.70 = 445,578,040.77 : x - Step 2: Convert to fraction form
816,854,358.21/1,127,266,208.70 = 445,578,040.77/x - Step 3: Cross multiply
816,854,358.21x = 1,127,266,208.70 × 445,578,040.77 - Step 4: Simplify right side
816,854,358.21x = 502,285,068,698,771,904 - Step 5: Solve for x
x = 502,285,068,698,771,904/816,854,358.21 - Step 6: Final answer
x = 614,901,620.65
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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.