Finding the Fourth Proportional to 1,343,044,345.64, 1,853,405,040.87 and 778,638,957.08
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Solution
The fourth proportional to 1,343,044,345.64, 1,853,405,040.87 and 778,638,957.08 is: 1,074,523,989.29
Step by Step Solution
- Step 1: Write the proportion equation
1,343,044,345.64 : 1,853,405,040.87 = 778,638,957.08 : x - Step 2: Convert to fraction form
1,343,044,345.64/1,853,405,040.87 = 778,638,957.08/x - Step 3: Cross multiply
1,343,044,345.64x = 1,853,405,040.87 × 778,638,957.08 - Step 4: Simplify right side
1,343,044,345.64x = 1,443,133,368,060,564,480 - Step 5: Solve for x
x = 1,443,133,368,060,564,480/1,343,044,345.64 - Step 6: Final answer
x = 1,074,523,989.29
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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.