Finding the Fourth Proportional to 1,319,257,461.24, 1,820,568,254.51 and 716,422,814.93
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Solution
The fourth proportional to 1,319,257,461.24, 1,820,568,254.51 and 716,422,814.93 is: 988,659,660.45
Step by Step Solution
- Step 1: Write the proportion equation
1,319,257,461.24 : 1,820,568,254.51 = 716,422,814.93 : x - Step 2: Convert to fraction form
1,319,257,461.24/1,820,568,254.51 = 716,422,814.93/x - Step 3: Cross multiply
1,319,257,461.24x = 1,820,568,254.51 × 716,422,814.93 - Step 4: Simplify right side
1,319,257,461.24x = 1,304,296,633,674,593,280 - Step 5: Solve for x
x = 1,304,296,633,674,593,280/1,319,257,461.24 - Step 6: Final answer
x = 988,659,660.45
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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.