Finding the Fourth Proportional to 869,879,416.80, 1,304,819,125.20 and 482,895,890.40
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Solution
The fourth proportional to 869,879,416.80, 1,304,819,125.20 and 482,895,890.40 is: 724,343,835.60
Step by Step Solution
- Step 1: Write the proportion equation
869,879,416.80 : 1,304,819,125.20 = 482,895,890.40 : x - Step 2: Convert to fraction form
869,879,416.80/1,304,819,125.20 = 482,895,890.40/x - Step 3: Cross multiply
869,879,416.80x = 1,304,819,125.20 × 482,895,890.40 - Step 4: Simplify right side
869,879,416.80x = 630,091,793,274,403,072 - Step 5: Solve for x
x = 630,091,793,274,403,072/869,879,416.80 - Step 6: Final answer
x = 724,343,835.60
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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.