Finding the Fourth Proportional to 896,860,813.30, 1,345,291,219.95 and 858,118,764.40
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Solution
The fourth proportional to 896,860,813.30, 1,345,291,219.95 and 858,118,764.40 is: 1,287,178,146.60
Step by Step Solution
- Step 1: Write the proportion equation
896,860,813.30 : 1,345,291,219.95 = 858,118,764.40 : x - Step 2: Convert to fraction form
896,860,813.30/1,345,291,219.95 = 858,118,764.40/x - Step 3: Cross multiply
896,860,813.30x = 1,345,291,219.95 × 858,118,764.40 - Step 4: Simplify right side
896,860,813.30x = 1,154,419,639,421,662,720 - Step 5: Solve for x
x = 1,154,419,639,421,662,720/896,860,813.30 - Step 6: Final answer
x = 1,287,178,146.60
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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.