Finding the Fourth Proportional to 8,989,387.68, 12,406,569.99 and 5,069,948.81
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Solution
The fourth proportional to 8,989,387.68, 12,406,569.99 and 5,069,948.81 is: 6,997,214.61
Step by Step Solution
- Step 1: Write the proportion equation
8,989,387.68 : 12,406,569.99 = 5,069,948.81 : x - Step 2: Convert to fraction form
8,989,387.68/12,406,569.99 = 5,069,948.81/x - Step 3: Cross multiply
8,989,387.68x = 12,406,569.99 × 5,069,948.81 - Step 4: Simplify right side
8,989,387.68x = 62,900,674,768,986.33 - Step 5: Solve for x
x = 62,900,674,768,986.33/8,989,387.68 - Step 6: Final answer
x = 6,997,214.61
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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.