Finding the Fourth Proportional to 1,128,520,045.98, 1,557,216,639.99 and 626,660,596.38
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Solution
The fourth proportional to 1,128,520,045.98, 1,557,216,639.99 and 626,660,596.38 is: 864,713,313.50
Step by Step Solution
- Step 1: Write the proportion equation
1,128,520,045.98 : 1,557,216,639.99 = 626,660,596.38 : x - Step 2: Convert to fraction form
1,128,520,045.98/1,557,216,639.99 = 626,660,596.38/x - Step 3: Cross multiply
1,128,520,045.98x = 1,557,216,639.99 × 626,660,596.38 - Step 4: Simplify right side
1,128,520,045.98x = 975,846,308,308,993,152 - Step 5: Solve for x
x = 975,846,308,308,993,152/1,128,520,045.98 - Step 6: Final answer
x = 864,713,313.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.