Finding the Fourth Proportional to 691,706,345.98, 954,577,521.11 and 378,433,391.03
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Solution
The fourth proportional to 691,706,345.98, 954,577,521.11 and 378,433,391.03 is: 522,250,533.65
Step by Step Solution
- Step 1: Write the proportion equation
691,706,345.98 : 954,577,521.11 = 378,433,391.03 : x - Step 2: Convert to fraction form
691,706,345.98/954,577,521.11 = 378,433,391.03/x - Step 3: Cross multiply
691,706,345.98x = 954,577,521.11 × 378,433,391.03 - Step 4: Simplify right side
691,706,345.98x = 361,244,008,312,776,512 - Step 5: Solve for x
x = 361,244,008,312,776,512/691,706,345.98 - Step 6: Final answer
x = 522,250,533.65
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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.