Finding the Fourth Proportional to 1,158,128,860.80, 1,737,193,291.20 and 976,730,332.80
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Solution
The fourth proportional to 1,158,128,860.80, 1,737,193,291.20 and 976,730,332.80 is: 1,465,095,499.20
Step by Step Solution
- Step 1: Write the proportion equation
1,158,128,860.80 : 1,737,193,291.20 = 976,730,332.80 : x - Step 2: Convert to fraction form
1,158,128,860.80/1,737,193,291.20 = 976,730,332.80/x - Step 3: Cross multiply
1,158,128,860.80x = 1,737,193,291.20 × 976,730,332.80 - Step 4: Simplify right side
1,158,128,860.80x = 1,696,769,381,451,703,296 - Step 5: Solve for x
x = 1,696,769,381,451,703,296/1,158,128,860.80 - Step 6: Final answer
x = 1,465,095,499.20
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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.