Finding the Fourth Proportional to 615,934,135.75, 849,779,855.16 and 351,426,108.55
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Solution
The fourth proportional to 615,934,135.75, 849,779,855.16 and 351,426,108.55 is: 484,848,639.31
Step by Step Solution
- Step 1: Write the proportion equation
615,934,135.75 : 849,779,855.16 = 351,426,108.55 : x - Step 2: Convert to fraction form
615,934,135.75/849,779,855.16 = 351,426,108.55/x - Step 3: Cross multiply
615,934,135.75x = 849,779,855.16 × 351,426,108.55 - Step 4: Simplify right side
615,934,135.75x = 298,634,827,623,061,440 - Step 5: Solve for x
x = 298,634,827,623,061,440/615,934,135.75 - Step 6: Final answer
x = 484,848,639.31
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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.