Finding the Fourth Proportional to 1,249,085,363,155.60, 1,723,103,413,391.30 and 815,791,382,604.28
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Solution
The fourth proportional to 1,249,085,363,155.60, 1,723,103,413,391.30 and 815,791,382,604.28 is: 1,125,377,782,371.42
Step by Step Solution
- Step 1: Write the proportion equation
1,249,085,363,155.60 : 1,723,103,413,391.30 = 815,791,382,604.28 : x - Step 2: Convert to fraction form
1,249,085,363,155.60/1,723,103,413,391.30 = 815,791,382,604.28/x - Step 3: Cross multiply
1,249,085,363,155.60x = 1,723,103,413,391.30 × 815,791,382,604.28 - Step 4: Simplify right side
1,249,085,363,155.60x = 1,405,692,915,980,643,040,493,568 - Step 5: Solve for x
x = 1,405,692,915,980,643,040,493,568/1,249,085,363,155.60 - Step 6: Final answer
x = 1,125,377,782,371.42
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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.