Finding the Fourth Proportional to 1,306,369,904.80, 1,959,554,857.20 and 579,358,616.80
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Solution
The fourth proportional to 1,306,369,904.80, 1,959,554,857.20 and 579,358,616.80 is: 869,037,925.20
Step by Step Solution
- Step 1: Write the proportion equation
1,306,369,904.80 : 1,959,554,857.20 = 579,358,616.80 : x - Step 2: Convert to fraction form
1,306,369,904.80/1,959,554,857.20 = 579,358,616.80/x - Step 3: Cross multiply
1,306,369,904.80x = 1,959,554,857.20 × 579,358,616.80 - Step 4: Simplify right side
1,306,369,904.80x = 1,135,284,991,611,113,472 - Step 5: Solve for x
x = 1,135,284,991,611,113,472/1,306,369,904.80 - Step 6: Final answer
x = 869,037,925.20
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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.