Finding the Fourth Proportional to 528,666.31, 729,539.95 and 286,943.74
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Solution
The fourth proportional to 528,666.31, 729,539.95 and 286,943.74 is: 395,971.75
Step by Step Solution
- Step 1: Write the proportion equation
528,666.31 : 729,539.95 = 286,943.74 : x - Step 2: Convert to fraction form
528,666.31/729,539.95 = 286,943.74/x - Step 3: Cross multiply
528,666.31x = 729,539.95 × 286,943.74 - Step 4: Simplify right side
528,666.31x = 209,336,921,732.41 - Step 5: Solve for x
x = 209,336,921,732.41/528,666.31 - Step 6: Final answer
x = 395,971.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.