Finding the Fourth Proportional to 898,137,645.20, 1,347,206,467.80 and 787,059,040.40
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Solution
The fourth proportional to 898,137,645.20, 1,347,206,467.80 and 787,059,040.40 is: 1,180,588,560.60
Step by Step Solution
- Step 1: Write the proportion equation
898,137,645.20 : 1,347,206,467.80 = 787,059,040.40 : x - Step 2: Convert to fraction form
898,137,645.20/1,347,206,467.80 = 787,059,040.40/x - Step 3: Cross multiply
898,137,645.20x = 1,347,206,467.80 × 787,059,040.40 - Step 4: Simplify right side
898,137,645.20x = 1,060,331,029,767,341,440 - Step 5: Solve for x
x = 1,060,331,029,767,341,440/898,137,645.20 - Step 6: Final answer
x = 1,180,588,560.60
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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.