Finding the Fourth Proportional to 815,562,511.21, 1,223,953,014.16 and 552,623,606.65
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Solution
The fourth proportional to 815,562,511.21, 1,223,953,014.16 and 552,623,606.65 is: 829,348,234.82
Step by Step Solution
- Step 1: Write the proportion equation
815,562,511.21 : 1,223,953,014.16 = 552,623,606.65 : x - Step 2: Convert to fraction form
815,562,511.21/1,223,953,014.16 = 552,623,606.65/x - Step 3: Cross multiply
815,562,511.21x = 1,223,953,014.16 × 552,623,606.65 - Step 4: Simplify right side
815,562,511.21x = 676,385,329,055,237,760 - Step 5: Solve for x
x = 676,385,329,055,237,760/815,562,511.21 - Step 6: Final answer
x = 829,348,234.82
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.