Finding the Fourth Proportional to 1,026,438,860.80, 1,539,658,291.20 and 832,947,097.60
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Solution
The fourth proportional to 1,026,438,860.80, 1,539,658,291.20 and 832,947,097.60 is: 1,249,420,646.40
Step by Step Solution
- Step 1: Write the proportion equation
1,026,438,860.80 : 1,539,658,291.20 = 832,947,097.60 : x - Step 2: Convert to fraction form
1,026,438,860.80/1,539,658,291.20 = 832,947,097.60/x - Step 3: Cross multiply
1,026,438,860.80x = 1,539,658,291.20 × 832,947,097.60 - Step 4: Simplify right side
1,026,438,860.80x = 1,282,453,904,950,815,744 - Step 5: Solve for x
x = 1,282,453,904,950,815,744/1,026,438,860.80 - Step 6: Final answer
x = 1,249,420,646.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.