Finding the Fourth Proportional to 640,421,382,193.85, 883,797,768,347.88 and 351,389,564,982.07
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Solution
The fourth proportional to 640,421,382,193.85, 883,797,768,347.88 and 351,389,564,982.07 is: 484,926,521,797.30
Step by Step Solution
- Step 1: Write the proportion equation
640,421,382,193.85 : 883,797,768,347.88 = 351,389,564,982.07 : x - Step 2: Convert to fraction form
640,421,382,193.85/883,797,768,347.88 = 351,389,564,982.07/x - Step 3: Cross multiply
640,421,382,193.85x = 883,797,768,347.88 × 351,389,564,982.07 - Step 4: Simplify right side
640,421,382,193.85x = 310,557,313,351,885,848,051,712 - Step 5: Solve for x
x = 310,557,313,351,885,848,051,712/640,421,382,193.85 - Step 6: Final answer
x = 484,926,521,797.30
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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.