Finding the Fourth Proportional to 698,471,386.40, 1,047,707,079.60 and 207,202,368.80
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Solution
The fourth proportional to 698,471,386.40, 1,047,707,079.60 and 207,202,368.80 is: 310,803,553.20
Step by Step Solution
- Step 1: Write the proportion equation
698,471,386.40 : 1,047,707,079.60 = 207,202,368.80 : x - Step 2: Convert to fraction form
698,471,386.40/1,047,707,079.60 = 207,202,368.80/x - Step 3: Cross multiply
698,471,386.40x = 1,047,707,079.60 × 207,202,368.80 - Step 4: Simplify right side
698,471,386.40x = 217,087,388,701,650,176 - Step 5: Solve for x
x = 217,087,388,701,650,176/698,471,386.40 - Step 6: Final answer
x = 310,803,553.20
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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.