Finding the Fourth Proportional to 896,860,801.80, 1,345,291,202.70 and 858,118,752.90
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Solution
The fourth proportional to 896,860,801.80, 1,345,291,202.70 and 858,118,752.90 is: 1,287,178,129.35
Step by Step Solution
- Step 1: Write the proportion equation
896,860,801.80 : 1,345,291,202.70 = 858,118,752.90 : x - Step 2: Convert to fraction form
896,860,801.80/1,345,291,202.70 = 858,118,752.90/x - Step 3: Cross multiply
896,860,801.80x = 1,345,291,202.70 × 858,118,752.90 - Step 4: Simplify right side
896,860,801.80x = 1,154,419,609,148,265,216 - Step 5: Solve for x
x = 1,154,419,609,148,265,216/896,860,801.80 - Step 6: Final answer
x = 1,287,178,129.35
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Double scale
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Similar ratio
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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.