Finding the Fourth Proportional to 391,999,844.86, 588,088,352.01 and 129,683,780.62
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Solution
The fourth proportional to 391,999,844.86, 588,088,352.01 and 129,683,780.62 is: 194,554,977.07
Step by Step Solution
- Step 1: Write the proportion equation
391,999,844.86 : 588,088,352.01 = 129,683,780.62 : x - Step 2: Convert to fraction form
391,999,844.86/588,088,352.01 = 129,683,780.62/x - Step 3: Cross multiply
391,999,844.86x = 588,088,352.01 × 129,683,780.62 - Step 4: Simplify right side
391,999,844.86x = 76,265,520,827,242,176 - Step 5: Solve for x
x = 76,265,520,827,242,176/391,999,844.86 - Step 6: Final answer
x = 194,554,977.07
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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.