Finding the Fourth Proportional to 1,991,352,802.40, 2,987,029,203.60 and 537,327,893.60
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Solution
The fourth proportional to 1,991,352,802.40, 2,987,029,203.60 and 537,327,893.60 is: 805,991,840.40
Step by Step Solution
- Step 1: Write the proportion equation
1,991,352,802.40 : 2,987,029,203.60 = 537,327,893.60 : x - Step 2: Convert to fraction form
1,991,352,802.40/2,987,029,203.60 = 537,327,893.60/x - Step 3: Cross multiply
1,991,352,802.40x = 2,987,029,203.60 × 537,327,893.60 - Step 4: Simplify right side
1,991,352,802.40x = 1,605,014,110,092,073,472 - Step 5: Solve for x
x = 1,605,014,110,092,073,472/1,991,352,802.40 - Step 6: Final answer
x = 805,991,840.40
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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.