Finding the Fourth Proportional to 781,816,630.32, 1,172,464,534.26 and 315,357,577.20
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Solution
The fourth proportional to 781,816,630.32, 1,172,464,534.26 and 315,357,577.20 is: 472,931,324.99
Step by Step Solution
- Step 1: Write the proportion equation
781,816,630.32 : 1,172,464,534.26 = 315,357,577.20 : x - Step 2: Convert to fraction form
781,816,630.32/1,172,464,534.26 = 315,357,577.20/x - Step 3: Cross multiply
781,816,630.32x = 1,172,464,534.26 × 315,357,577.20 - Step 4: Simplify right side
781,816,630.32x = 369,745,574,877,160,000 - Step 5: Solve for x
x = 369,745,574,877,160,000/781,816,630.32 - Step 6: Final answer
x = 472,931,324.99
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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.