Finding the Fourth Proportional to 756,291,242.40, 1,134,436,863.60 and 647,452,125.60
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Solution
The fourth proportional to 756,291,242.40, 1,134,436,863.60 and 647,452,125.60 is: 971,178,188.40
Step by Step Solution
- Step 1: Write the proportion equation
756,291,242.40 : 1,134,436,863.60 = 647,452,125.60 : x - Step 2: Convert to fraction form
756,291,242.40/1,134,436,863.60 = 647,452,125.60/x - Step 3: Cross multiply
756,291,242.40x = 1,134,436,863.60 × 647,452,125.60 - Step 4: Simplify right side
756,291,242.40x = 734,493,558,696,817,280 - Step 5: Solve for x
x = 734,493,558,696,817,280/756,291,242.40 - Step 6: Final answer
x = 971,178,188.40
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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.