Finding the Fourth Proportional to 708,637.50, 977,919.75 and 390,685.50
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Solution
The fourth proportional to 708,637.50, 977,919.75 and 390,685.50 is: 539,145.99
Step by Step Solution
- Step 1: Write the proportion equation
708,637.50 : 977,919.75 = 390,685.50 : x - Step 2: Convert to fraction form
708,637.50/977,919.75 = 390,685.50/x - Step 3: Cross multiply
708,637.50x = 977,919.75 × 390,685.50 - Step 4: Simplify right side
708,637.50x = 382,059,066,488.63 - Step 5: Solve for x
x = 382,059,066,488.63/708,637.50 - Step 6: Final answer
x = 539,145.99
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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.