Finding the Fourth Proportional to 742,174.54, 1,024,202.84 and 402,642.78
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Solution
The fourth proportional to 742,174.54, 1,024,202.84 and 402,642.78 is: 555,648.11
Step by Step Solution
- Step 1: Write the proportion equation
742,174.54 : 1,024,202.84 = 402,642.78 : x - Step 2: Convert to fraction form
742,174.54/1,024,202.84 = 402,642.78/x - Step 3: Cross multiply
742,174.54x = 1,024,202.84 × 402,642.78 - Step 4: Simplify right side
742,174.54x = 412,387,878,781.50 - Step 5: Solve for x
x = 412,387,878,781.50/742,174.54 - Step 6: Final answer
x = 555,648.11
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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.