Finding the Fourth Proportional to 1,189,486,596.36, 1,641,395,267.31 and 687,727,572.66
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Solution
The fourth proportional to 1,189,486,596.36, 1,641,395,267.31 and 687,727,572.66 is: 949,008,409.52
Step by Step Solution
- Step 1: Write the proportion equation
1,189,486,596.36 : 1,641,395,267.31 = 687,727,572.66 : x - Step 2: Convert to fraction form
1,189,486,596.36/1,641,395,267.31 = 687,727,572.66/x - Step 3: Cross multiply
1,189,486,596.36x = 1,641,395,267.31 × 687,727,572.66 - Step 4: Simplify right side
1,189,486,596.36x = 1,128,832,782,962,718,080 - Step 5: Solve for x
x = 1,128,832,782,962,718,080/1,189,486,596.36 - Step 6: Final answer
x = 949,008,409.52
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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.