Finding the Fourth Proportional to 986,901,400.80, 1,480,352,101.20 and 793,191,156.30
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Solution
The fourth proportional to 986,901,400.80, 1,480,352,101.20 and 793,191,156.30 is: 1,189,786,734.45
Step by Step Solution
- Step 1: Write the proportion equation
986,901,400.80 : 1,480,352,101.20 = 793,191,156.30 : x - Step 2: Convert to fraction form
986,901,400.80/1,480,352,101.20 = 793,191,156.30/x - Step 3: Cross multiply
986,901,400.80x = 1,480,352,101.20 × 793,191,156.30 - Step 4: Simplify right side
986,901,400.80x = 1,174,202,194,881,962,496 - Step 5: Solve for x
x = 1,174,202,194,881,962,496/986,901,400.80 - Step 6: Final answer
x = 1,189,786,734.45
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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.