Finding the Fourth Proportional to 1,485,874,187.70, 2,228,811,281.55 and 840,901,643.70
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Solution
The fourth proportional to 1,485,874,187.70, 2,228,811,281.55 and 840,901,643.70 is: 1,261,352,465.55
Step by Step Solution
- Step 1: Write the proportion equation
1,485,874,187.70 : 2,228,811,281.55 = 840,901,643.70 : x - Step 2: Convert to fraction form
1,485,874,187.70/2,228,811,281.55 = 840,901,643.70/x - Step 3: Cross multiply
1,485,874,187.70x = 2,228,811,281.55 × 840,901,643.70 - Step 4: Simplify right side
1,485,874,187.70x = 1,874,211,070,152,498,688 - Step 5: Solve for x
x = 1,874,211,070,152,498,688/1,485,874,187.70 - Step 6: Final answer
x = 1,261,352,465.55
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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.