Finding the Fourth Proportional to 1,249,085,363,156.40, 1,723,103,413,392.40 and 815,791,382,605.07
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Solution
The fourth proportional to 1,249,085,363,156.40, 1,723,103,413,392.40 and 815,791,382,605.07 is: 1,125,377,782,372.50
Step by Step Solution
- Step 1: Write the proportion equation
1,249,085,363,156.40 : 1,723,103,413,392.40 = 815,791,382,605.07 : x - Step 2: Convert to fraction form
1,249,085,363,156.40/1,723,103,413,392.40 = 815,791,382,605.07/x - Step 3: Cross multiply
1,249,085,363,156.40x = 1,723,103,413,392.40 × 815,791,382,605.07 - Step 4: Simplify right side
1,249,085,363,156.40x = 1,405,692,915,982,901,387,984,896 - Step 5: Solve for x
x = 1,405,692,915,982,901,387,984,896/1,249,085,363,156.40 - Step 6: Final answer
x = 1,125,377,782,372.50
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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.