Finding the Fourth Proportional to 1,238,311,480.11, 1,708,818,267.18 and 673,798,578.63
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Solution
The fourth proportional to 1,238,311,480.11, 1,708,818,267.18 and 673,798,578.63 is: 929,813,974.96
Step by Step Solution
- Step 1: Write the proportion equation
1,238,311,480.11 : 1,708,818,267.18 = 673,798,578.63 : x - Step 2: Convert to fraction form
1,238,311,480.11/1,708,818,267.18 = 673,798,578.63/x - Step 3: Cross multiply
1,238,311,480.11x = 1,708,818,267.18 × 673,798,578.63 - Step 4: Simplify right side
1,238,311,480.11x = 1,151,399,319,562,863,616 - Step 5: Solve for x
x = 1,151,399,319,562,863,616/1,238,311,480.11 - Step 6: Final answer
x = 929,813,974.96
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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.