Finding the Fourth Proportional to 1,278,779,232.48, 1,764,696,713.27 and 714,272,146.80
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Solution
The fourth proportional to 1,278,779,232.48, 1,764,696,713.27 and 714,272,146.80 is: 985,685,158.02
Step by Step Solution
- Step 1: Write the proportion equation
1,278,779,232.48 : 1,764,696,713.27 = 714,272,146.80 : x - Step 2: Convert to fraction form
1,278,779,232.48/1,764,696,713.27 = 714,272,146.80/x - Step 3: Cross multiply
1,278,779,232.48x = 1,764,696,713.27 × 714,272,146.80 - Step 4: Simplify right side
1,278,779,232.48x = 1,260,473,709,834,695,680 - Step 5: Solve for x
x = 1,260,473,709,834,695,680/1,278,779,232.48 - Step 6: Final answer
x = 985,685,158.02
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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.