Finding the Fourth Proportional to 1,454,465,728.87, 2,007,168,835.68 and 819,393,840.79
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Solution
The fourth proportional to 1,454,465,728.87, 2,007,168,835.68 and 819,393,840.79 is: 1,130,766,953.62
Step by Step Solution
- Step 1: Write the proportion equation
1,454,465,728.87 : 2,007,168,835.68 = 819,393,840.79 : x - Step 2: Convert to fraction form
1,454,465,728.87/2,007,168,835.68 = 819,393,840.79/x - Step 3: Cross multiply
1,454,465,728.87x = 2,007,168,835.68 × 819,393,840.79 - Step 4: Simplify right side
1,454,465,728.87x = 1,644,661,781,381,827,584 - Step 5: Solve for x
x = 1,644,661,781,381,827,584/1,454,465,728.87 - Step 6: Final answer
x = 1,130,766,953.62
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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.