Finding the Fourth Proportional to 1,390,168,257.60, 2,085,252,386.40 and 734,866,075.20
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Solution
The fourth proportional to 1,390,168,257.60, 2,085,252,386.40 and 734,866,075.20 is: 1,102,299,112.80
Step by Step Solution
- Step 1: Write the proportion equation
1,390,168,257.60 : 2,085,252,386.40 = 734,866,075.20 : x - Step 2: Convert to fraction form
1,390,168,257.60/2,085,252,386.40 = 734,866,075.20/x - Step 3: Cross multiply
1,390,168,257.60x = 2,085,252,386.40 × 734,866,075.20 - Step 4: Simplify right side
1,390,168,257.60x = 1,532,381,236,995,202,048 - Step 5: Solve for x
x = 1,532,381,236,995,202,048/1,390,168,257.60 - Step 6: Final answer
x = 1,102,299,112.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.