Finding the Fourth Proportional to 946,988,579.20, 1,420,482,868.80 and 776,927,459.20
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Solution
The fourth proportional to 946,988,579.20, 1,420,482,868.80 and 776,927,459.20 is: 1,165,391,188.80
Step by Step Solution
- Step 1: Write the proportion equation
946,988,579.20 : 1,420,482,868.80 = 776,927,459.20 : x - Step 2: Convert to fraction form
946,988,579.20/1,420,482,868.80 = 776,927,459.20/x - Step 3: Cross multiply
946,988,579.20x = 1,420,482,868.80 × 776,927,459.20 - Step 4: Simplify right side
946,988,579.20x = 1,103,612,146,093,911,040 - Step 5: Solve for x
x = 1,103,612,146,093,911,040/946,988,579.20 - Step 6: Final answer
x = 1,165,391,188.80
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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.