Finding the Fourth Proportional to 1,211,125,698.48, 1,671,354,196.12 and 654,208,991.58
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Solution
The fourth proportional to 1,211,125,698.48, 1,671,354,196.12 and 654,208,991.58 is: 902,808,803.90
Step by Step Solution
- Step 1: Write the proportion equation
1,211,125,698.48 : 1,671,354,196.12 = 654,208,991.58 : x - Step 2: Convert to fraction form
1,211,125,698.48/1,671,354,196.12 = 654,208,991.58/x - Step 3: Cross multiply
1,211,125,698.48x = 1,671,354,196.12 × 654,208,991.58 - Step 4: Simplify right side
1,211,125,698.48x = 1,093,414,943,216,666,752 - Step 5: Solve for x
x = 1,093,414,943,216,666,752/1,211,125,698.48 - Step 6: Final answer
x = 902,808,803.90
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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.