Finding the Fourth Proportional to 1,251,606,643.20, 1,878,081,811.20 and 524,668,838.40
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Solution
The fourth proportional to 1,251,606,643.20, 1,878,081,811.20 and 524,668,838.40 is: 787,284,893.11
Step by Step Solution
- Step 1: Write the proportion equation
1,251,606,643.20 : 1,878,081,811.20 = 524,668,838.40 : x - Step 2: Convert to fraction form
1,251,606,643.20/1,878,081,811.20 = 524,668,838.40/x - Step 3: Cross multiply
1,251,606,643.20x = 1,878,081,811.20 × 524,668,838.40 - Step 4: Simplify right side
1,251,606,643.20x = 985,371,002,302,472,064 - Step 5: Solve for x
x = 985,371,002,302,472,064/1,251,606,643.20 - Step 6: Final answer
x = 787,284,893.11
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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.