Finding the Fourth Proportional to 662,018.36, 913,652.58 and 390,173.80
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Solution
The fourth proportional to 662,018.36, 913,652.58 and 390,173.80 is: 538,479.48
Step by Step Solution
- Step 1: Write the proportion equation
662,018.36 : 913,652.58 = 390,173.80 : x - Step 2: Convert to fraction form
662,018.36/913,652.58 = 390,173.80/x - Step 3: Cross multiply
662,018.36x = 913,652.58 × 390,173.80 - Step 4: Simplify right side
662,018.36x = 356,483,299,018.40 - Step 5: Solve for x
x = 356,483,299,018.40/662,018.36 - Step 6: Final answer
x = 538,479.48
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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.