Finding the Fourth Proportional to 686,016,466.60, 1,029,024,699.90 and 395,778,821.80
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Solution
The fourth proportional to 686,016,466.60, 1,029,024,699.90 and 395,778,821.80 is: 593,668,232.70
Step by Step Solution
- Step 1: Write the proportion equation
686,016,466.60 : 1,029,024,699.90 = 395,778,821.80 : x - Step 2: Convert to fraction form
686,016,466.60/1,029,024,699.90 = 395,778,821.80/x - Step 3: Cross multiply
686,016,466.60x = 1,029,024,699.90 × 395,778,821.80 - Step 4: Simplify right side
686,016,466.60x = 407,266,183,329,520,576 - Step 5: Solve for x
x = 407,266,183,329,520,576/686,016,466.60 - Step 6: Final answer
x = 593,668,232.70
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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.