Finding the Fourth Proportional to 1,978,992,135.60, 2,968,488,203.40 and 1,888,292,871.60
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Solution
The fourth proportional to 1,978,992,135.60, 2,968,488,203.40 and 1,888,292,871.60 is: 2,832,439,307.40
Step by Step Solution
- Step 1: Write the proportion equation
1,978,992,135.60 : 2,968,488,203.40 = 1,888,292,871.60 : x - Step 2: Convert to fraction form
1,978,992,135.60/2,968,488,203.40 = 1,888,292,871.60/x - Step 3: Cross multiply
1,978,992,135.60x = 2,968,488,203.40 × 1,888,292,871.60 - Step 4: Simplify right side
1,978,992,135.60x = 5,605,375,113,908,911,104 - Step 5: Solve for x
x = 5,605,375,113,908,911,104/1,978,992,135.60 - Step 6: Final answer
x = 2,832,439,307.40
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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.