Finding the Fourth Proportional to 708,288.78, 977,409.99 and 385,991.95
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Solution
The fourth proportional to 708,288.78, 977,409.99 and 385,991.95 is: 532,653.35
Step by Step Solution
- Step 1: Write the proportion equation
708,288.78 : 977,409.99 = 385,991.95 : x - Step 2: Convert to fraction form
708,288.78/977,409.99 = 385,991.95/x - Step 3: Cross multiply
708,288.78x = 977,409.99 × 385,991.95 - Step 4: Simplify right side
708,288.78x = 377,272,387,989.58 - Step 5: Solve for x
x = 377,272,387,989.58/708,288.78 - Step 6: Final answer
x = 532,653.35
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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.