Finding the Fourth Proportional to 1,115,344,474.20, 1,539,166,867.12 and 613,542,456.36
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Solution
The fourth proportional to 1,115,344,474.20, 1,539,166,867.12 and 613,542,456.36 is: 846,683,909.99
Step by Step Solution
- Step 1: Write the proportion equation
1,115,344,474.20 : 1,539,166,867.12 = 613,542,456.36 : x - Step 2: Convert to fraction form
1,115,344,474.20/1,539,166,867.12 = 613,542,456.36/x - Step 3: Cross multiply
1,115,344,474.20x = 1,539,166,867.12 × 613,542,456.36 - Step 4: Simplify right side
1,115,344,474.20x = 944,344,220,400,730,496 - Step 5: Solve for x
x = 944,344,220,400,730,496/1,115,344,474.20 - Step 6: Final answer
x = 846,683,909.99
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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.