Finding the Fourth Proportional to 1,081,737,855.12, 1,492,832,031.84 and 611,829,980.96
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Solution
The fourth proportional to 1,081,737,855.12, 1,492,832,031.84 and 611,829,980.96 is: 844,344,486.32
Step by Step Solution
- Step 1: Write the proportion equation
1,081,737,855.12 : 1,492,832,031.84 = 611,829,980.96 : x - Step 2: Convert to fraction form
1,081,737,855.12/1,492,832,031.84 = 611,829,980.96/x - Step 3: Cross multiply
1,081,737,855.12x = 1,492,832,031.84 × 611,829,980.96 - Step 4: Simplify right side
1,081,737,855.12x = 913,359,393,617,145,344 - Step 5: Solve for x
x = 913,359,393,617,145,344/1,081,737,855.12 - Step 6: Final answer
x = 844,344,486.32
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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.