Finding the Fourth Proportional to 918,756,305.24, 1,378,132,355.30 and 393,785,008.11
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Solution
The fourth proportional to 918,756,305.24, 1,378,132,355.30 and 393,785,008.11 is: 590,676,610.99
Step by Step Solution
- Step 1: Write the proportion equation
918,756,305.24 : 1,378,132,355.30 = 393,785,008.11 : x - Step 2: Convert to fraction form
918,756,305.24/1,378,132,355.30 = 393,785,008.11/x - Step 3: Cross multiply
918,756,305.24x = 1,378,132,355.30 × 393,785,008.11 - Step 4: Simplify right side
918,756,305.24x = 542,687,860,706,495,040 - Step 5: Solve for x
x = 542,687,860,706,495,040/918,756,305.24 - Step 6: Final answer
x = 590,676,610.99
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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.