Finding the Fourth Proportional to 423,656,993.12, 584,805,243.48 and 318,115,294.70
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Solution
The fourth proportional to 423,656,993.12, 584,805,243.48 and 318,115,294.70 is: 439,118,190.88
Step by Step Solution
- Step 1: Write the proportion equation
423,656,993.12 : 584,805,243.48 = 318,115,294.70 : x - Step 2: Convert to fraction form
423,656,993.12/584,805,243.48 = 318,115,294.70/x - Step 3: Cross multiply
423,656,993.12x = 584,805,243.48 × 318,115,294.70 - Step 4: Simplify right side
423,656,993.12x = 186,035,492,371,745,440 - Step 5: Solve for x
x = 186,035,492,371,745,440/423,656,993.12 - Step 6: Final answer
x = 439,118,190.88
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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.