Finding the Fourth Proportional to 1,139,545,260.16, 1,572,737,616.07 and 656,643,261.68
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Solution
The fourth proportional to 1,139,545,260.16, 1,572,737,616.07 and 656,643,261.68 is: 906,262,870.01
Step by Step Solution
- Step 1: Write the proportion equation
1,139,545,260.16 : 1,572,737,616.07 = 656,643,261.68 : x - Step 2: Convert to fraction form
1,139,545,260.16/1,572,737,616.07 = 656,643,261.68/x - Step 3: Cross multiply
1,139,545,260.16x = 1,572,737,616.07 × 656,643,261.68 - Step 4: Simplify right side
1,139,545,260.16x = 1,032,727,557,977,307,520 - Step 5: Solve for x
x = 1,032,727,557,977,307,520/1,139,545,260.16 - Step 6: Final answer
x = 906,262,870.01
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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.