Finding the Fourth Proportional to 716,157,700,305.88, 988,292,509,548.84 and 390,996,981,490.02
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Solution
The fourth proportional to 716,157,700,305.88, 988,292,509,548.84 and 390,996,981,490.02 is: 539,573,040,822.92
Step by Step Solution
- Step 1: Write the proportion equation
716,157,700,305.88 : 988,292,509,548.84 = 390,996,981,490.02 : x - Step 2: Convert to fraction form
716,157,700,305.88/988,292,509,548.84 = 390,996,981,490.02/x - Step 3: Cross multiply
716,157,700,305.88x = 988,292,509,548.84 × 390,996,981,490.02 - Step 4: Simplify right side
716,157,700,305.88x = 386,419,388,062,793,180,643,328 - Step 5: Solve for x
x = 386,419,388,062,793,180,643,328/716,157,700,305.88 - Step 6: Final answer
x = 539,573,040,822.92
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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.