Finding the Fourth Proportional to 641,703,717,656.67, 885,572,367,735.09 and 352,682,221,555.35
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Solution
The fourth proportional to 641,703,717,656.67, 885,572,367,735.09 and 352,682,221,555.35 is: 486,713,137,865.82
Step by Step Solution
- Step 1: Write the proportion equation
641,703,717,656.67 : 885,572,367,735.09 = 352,682,221,555.35 : x - Step 2: Convert to fraction form
641,703,717,656.67/885,572,367,735.09 = 352,682,221,555.35/x - Step 3: Cross multiply
641,703,717,656.67x = 885,572,367,735.09 × 352,682,221,555.35 - Step 4: Simplify right side
641,703,717,656.67x = 312,325,630,000,842,863,017,984 - Step 5: Solve for x
x = 312,325,630,000,842,863,017,984/641,703,717,656.67 - Step 6: Final answer
x = 486,713,137,865.82
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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.