Finding the Fourth Proportional to 1,225,971,360.48, 1,691,876,345.52 and 669,090,125.28
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Solution
The fourth proportional to 1,225,971,360.48, 1,691,876,345.52 and 669,090,125.28 is: 923,363,948.35
Step by Step Solution
- Step 1: Write the proportion equation
1,225,971,360.48 : 1,691,876,345.52 = 669,090,125.28 : x - Step 2: Convert to fraction form
1,225,971,360.48/1,691,876,345.52 = 669,090,125.28/x - Step 3: Cross multiply
1,225,971,360.48x = 1,691,876,345.52 × 669,090,125.28 - Step 4: Simplify right side
1,225,971,360.48x = 1,132,017,755,982,245,248 - Step 5: Solve for x
x = 1,132,017,755,982,245,248/1,225,971,360.48 - Step 6: Final answer
x = 923,363,948.35
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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.