Finding the Fourth Proportional to 919,328,574.90, 1,378,992,862.35 and 804,537,318.90
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Solution
The fourth proportional to 919,328,574.90, 1,378,992,862.35 and 804,537,318.90 is: 1,206,805,978.35
Step by Step Solution
- Step 1: Write the proportion equation
919,328,574.90 : 1,378,992,862.35 = 804,537,318.90 : x - Step 2: Convert to fraction form
919,328,574.90/1,378,992,862.35 = 804,537,318.90/x - Step 3: Cross multiply
919,328,574.90x = 1,378,992,862.35 × 804,537,318.90 - Step 4: Simplify right side
919,328,574.90x = 1,109,451,220,257,305,600 - Step 5: Solve for x
x = 1,109,451,220,257,305,600/919,328,574.90 - Step 6: Final answer
x = 1,206,805,978.35
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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.