Finding the Fourth Proportional to 819,961,246.46, 1,132,328,013.95 and 775,290,280.68
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Solution
The fourth proportional to 819,961,246.46, 1,132,328,013.95 and 775,290,280.68 is: 1,070,639,505.90
Step by Step Solution
- Step 1: Write the proportion equation
819,961,246.46 : 1,132,328,013.95 = 775,290,280.68 : x - Step 2: Convert to fraction form
819,961,246.46/1,132,328,013.95 = 775,290,280.68/x - Step 3: Cross multiply
819,961,246.46x = 1,132,328,013.95 × 775,290,280.68 - Step 4: Simplify right side
819,961,246.46x = 877,882,903,763,307,008 - Step 5: Solve for x
x = 877,882,903,763,307,008/819,961,246.46 - Step 6: Final answer
x = 1,070,639,505.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.