Finding the Fourth Proportional to 1,277,156,134.85, 1,915,734,202.28 and 971,046,118.85
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Solution
The fourth proportional to 1,277,156,134.85, 1,915,734,202.28 and 971,046,118.85 is: 1,456,569,178.28
Step by Step Solution
- Step 1: Write the proportion equation
1,277,156,134.85 : 1,915,734,202.28 = 971,046,118.85 : x - Step 2: Convert to fraction form
1,277,156,134.85/1,915,734,202.28 = 971,046,118.85/x - Step 3: Cross multiply
1,277,156,134.85x = 1,915,734,202.28 × 971,046,118.85 - Step 4: Simplify right side
1,277,156,134.85x = 1,860,266,261,867,339,776 - Step 5: Solve for x
x = 1,860,266,261,867,339,776/1,277,156,134.85 - Step 6: Final answer
x = 1,456,569,178.28
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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.