Finding the Fourth Proportional to 742,419.78, 1,024,539.95 and 402,888.03
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Solution
The fourth proportional to 742,419.78, 1,024,539.95 and 402,888.03 is: 555,985.84
Step by Step Solution
- Step 1: Write the proportion equation
742,419.78 : 1,024,539.95 = 402,888.03 : x - Step 2: Convert to fraction form
742,419.78/1,024,539.95 = 402,888.03/x - Step 3: Cross multiply
742,419.78x = 1,024,539.95 × 402,888.03 - Step 4: Simplify right side
742,419.78x = 412,774,883,119.02 - Step 5: Solve for x
x = 412,774,883,119.02/742,419.78 - Step 6: Final answer
x = 555,985.84
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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.