Finding the Fourth Proportional to 708,420.51, 977,620.92 and 386,124.14
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Solution
The fourth proportional to 708,420.51, 977,620.92 and 386,124.14 is: 532,851.65
Step by Step Solution
- Step 1: Write the proportion equation
708,420.51 : 977,620.92 = 386,124.14 : x - Step 2: Convert to fraction form
708,420.51/977,620.92 = 386,124.14/x - Step 3: Cross multiply
708,420.51x = 977,620.92 × 386,124.14 - Step 4: Simplify right side
708,420.51x = 377,483,036,981.01 - Step 5: Solve for x
x = 377,483,036,981.01/708,420.51 - Step 6: Final answer
x = 532,851.65
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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.