Finding the Fourth Proportional to 1,036,638,076.80, 1,554,957,115.20 and 649,217,587.80
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Solution
The fourth proportional to 1,036,638,076.80, 1,554,957,115.20 and 649,217,587.80 is: 973,826,381.70
Step by Step Solution
- Step 1: Write the proportion equation
1,036,638,076.80 : 1,554,957,115.20 = 649,217,587.80 : x - Step 2: Convert to fraction form
1,036,638,076.80/1,554,957,115.20 = 649,217,587.80/x - Step 3: Cross multiply
1,036,638,076.80x = 1,554,957,115.20 × 649,217,587.80 - Step 4: Simplify right side
1,036,638,076.80x = 1,009,505,507,462,590,720 - Step 5: Solve for x
x = 1,009,505,507,462,590,720/1,036,638,076.80 - Step 6: Final answer
x = 973,826,381.70
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1.5x scale
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.