Finding the Fourth Proportional to 1,564,088,689.64, 2,158,464,498.18 and 859,305,806.12
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Solution
The fourth proportional to 1,564,088,689.64, 2,158,464,498.18 and 859,305,806.12 is: 1,185,854,157.68
Step by Step Solution
- Step 1: Write the proportion equation
1,564,088,689.64 : 2,158,464,498.18 = 859,305,806.12 : x - Step 2: Convert to fraction form
1,564,088,689.64/2,158,464,498.18 = 859,305,806.12/x - Step 3: Cross multiply
1,564,088,689.64x = 2,158,464,498.18 × 859,305,806.12 - Step 4: Simplify right side
1,564,088,689.64x = 1,854,781,075,589,966,080 - Step 5: Solve for x
x = 1,854,781,075,589,966,080/1,564,088,689.64 - Step 6: Final answer
x = 1,185,854,157.68
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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.