Finding the Fourth Proportional to 509,360.74, 702,921.99 and 318,484.78
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Solution
The fourth proportional to 509,360.74, 702,921.99 and 318,484.78 is: 439,511.60
Step by Step Solution
- Step 1: Write the proportion equation
509,360.74 : 702,921.99 = 318,484.78 : x - Step 2: Convert to fraction form
509,360.74/702,921.99 = 318,484.78/x - Step 3: Cross multiply
509,360.74x = 702,921.99 × 318,484.78 - Step 4: Simplify right side
509,360.74x = 223,869,955,342.31 - Step 5: Solve for x
x = 223,869,955,342.31/509,360.74 - Step 6: Final answer
x = 439,511.60
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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.