Finding the Fourth Proportional to 698,471,420.40, 1,047,707,130.60 and 207,202,402.80
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Solution
The fourth proportional to 698,471,420.40, 1,047,707,130.60 and 207,202,402.80 is: 310,803,604.20
Step by Step Solution
- Step 1: Write the proportion equation
698,471,420.40 : 1,047,707,130.60 = 207,202,402.80 : x - Step 2: Convert to fraction form
698,471,420.40/1,047,707,130.60 = 207,202,402.80/x - Step 3: Cross multiply
698,471,420.40x = 1,047,707,130.60 × 207,202,402.80 - Step 4: Simplify right side
698,471,420.40x = 217,087,434,891,013,408 - Step 5: Solve for x
x = 217,087,434,891,013,408/698,471,420.40 - Step 6: Final answer
x = 310,803,604.20
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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.