Finding the Fourth Proportional to 1,124,957,642.10, 1,552,420,775.18 and 623,155,415.45
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Solution
The fourth proportional to 1,124,957,642.10, 1,552,420,775.18 and 623,155,415.45 is: 859,942,967.55
Step by Step Solution
- Step 1: Write the proportion equation
1,124,957,642.10 : 1,552,420,775.18 = 623,155,415.45 : x - Step 2: Convert to fraction form
1,124,957,642.10/1,552,420,775.18 = 623,155,415.45/x - Step 3: Cross multiply
1,124,957,642.10x = 1,552,420,775.18 × 623,155,415.45 - Step 4: Simplify right side
1,124,957,642.10x = 967,399,413,114,641,920 - Step 5: Solve for x
x = 967,399,413,114,641,920/1,124,957,642.10 - Step 6: Final answer
x = 859,942,967.55
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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.