Finding the Fourth Proportional to 946,988,579.70, 1,420,482,869.55 and 776,927,459.70
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Solution
The fourth proportional to 946,988,579.70, 1,420,482,869.55 and 776,927,459.70 is: 1,165,391,189.55
Step by Step Solution
- Step 1: Write the proportion equation
946,988,579.70 : 1,420,482,869.55 = 776,927,459.70 : x - Step 2: Convert to fraction form
946,988,579.70/1,420,482,869.55 = 776,927,459.70/x - Step 3: Cross multiply
946,988,579.70x = 1,420,482,869.55 × 776,927,459.70 - Step 4: Simplify right side
946,988,579.70x = 1,103,612,147,386,848,000 - Step 5: Solve for x
x = 1,103,612,147,386,848,000/946,988,579.70 - Step 6: Final answer
x = 1,165,391,189.55
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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.