Finding the Fourth Proportional to 556,352,252.67, 767,727,702.95 and 308,814,120.75
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Solution
The fourth proportional to 556,352,252.67, 767,727,702.95 and 308,814,120.75 is: 426,142,168.78
Step by Step Solution
- Step 1: Write the proportion equation
556,352,252.67 : 767,727,702.95 = 308,814,120.75 : x - Step 2: Convert to fraction form
556,352,252.67/767,727,702.95 = 308,814,120.75/x - Step 3: Cross multiply
556,352,252.67x = 767,727,702.95 × 308,814,120.75 - Step 4: Simplify right side
556,352,252.67x = 237,085,155,560,377,376 - Step 5: Solve for x
x = 237,085,155,560,377,376/556,352,252.67 - Step 6: Final answer
x = 426,142,168.78
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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.