Finding the Fourth Proportional to 747,547.27, 1,031,503.49 and 420,812.53
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Solution
The fourth proportional to 747,547.27, 1,031,503.49 and 420,812.53 is: 580,658.38
Step by Step Solution
- Step 1: Write the proportion equation
747,547.27 : 1,031,503.49 = 420,812.53 : x - Step 2: Convert to fraction form
747,547.27/1,031,503.49 = 420,812.53/x - Step 3: Cross multiply
747,547.27x = 1,031,503.49 × 420,812.53 - Step 4: Simplify right side
747,547.27x = 434,069,588,647.91 - Step 5: Solve for x
x = 434,069,588,647.91/747,547.27 - Step 6: Final answer
x = 580,658.38
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1.5x scale
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.