Finding the Fourth Proportional to 389,972,602.01, 537,848,395.42 and 342,828,875.84
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Solution
The fourth proportional to 389,972,602.01, 537,848,395.42 and 342,828,875.84 is: 472,827,987.96
Step by Step Solution
- Step 1: Write the proportion equation
389,972,602.01 : 537,848,395.42 = 342,828,875.84 : x - Step 2: Convert to fraction form
389,972,602.01/537,848,395.42 = 342,828,875.84/x - Step 3: Cross multiply
389,972,602.01x = 537,848,395.42 × 342,828,875.84 - Step 4: Simplify right side
389,972,602.01x = 184,389,960,770,640,096 - Step 5: Solve for x
x = 184,389,960,770,640,096/389,972,602.01 - Step 6: Final answer
x = 472,827,987.96
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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.