Finding the Fourth Proportional to 393,391,731.98, 542,951,651.40 and 234,632,031.68
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Solution
The fourth proportional to 393,391,731.98, 542,951,651.40 and 234,632,031.68 is: 323,834,587.04
Step by Step Solution
- Step 1: Write the proportion equation
393,391,731.98 : 542,951,651.40 = 234,632,031.68 : x - Step 2: Convert to fraction form
393,391,731.98/542,951,651.40 = 234,632,031.68/x - Step 3: Cross multiply
393,391,731.98x = 542,951,651.40 × 234,632,031.68 - Step 4: Simplify right side
393,391,731.98x = 127,393,849,071,993,120 - Step 5: Solve for x
x = 127,393,849,071,993,120/393,391,731.98 - Step 6: Final answer
x = 323,834,587.04
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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.