Finding the Fourth Proportional to 609,444,830.80, 914,167,246.20 and 425,778,821.20
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Solution
The fourth proportional to 609,444,830.80, 914,167,246.20 and 425,778,821.20 is: 638,668,231.80
Step by Step Solution
- Step 1: Write the proportion equation
609,444,830.80 : 914,167,246.20 = 425,778,821.20 : x - Step 2: Convert to fraction form
609,444,830.80/914,167,246.20 = 425,778,821.20/x - Step 3: Cross multiply
609,444,830.80x = 914,167,246.20 × 425,778,821.20 - Step 4: Simplify right side
609,444,830.80x = 389,233,052,466,686,208 - Step 5: Solve for x
x = 389,233,052,466,686,208/609,444,830.80 - Step 6: Final answer
x = 638,668,231.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.