Finding the Fourth Proportional to 696,403,442.78, 961,036,718.56 and 383,130,930.70
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Solution
The fourth proportional to 696,403,442.78, 961,036,718.56 and 383,130,930.70 is: 528,720,666.50
Step by Step Solution
- Step 1: Write the proportion equation
696,403,442.78 : 961,036,718.56 = 383,130,930.70 : x - Step 2: Convert to fraction form
696,403,442.78/961,036,718.56 = 383,130,930.70/x - Step 3: Cross multiply
696,403,442.78x = 961,036,718.56 × 383,130,930.70 - Step 4: Simplify right side
696,403,442.78x = 368,202,892,418,766,720 - Step 5: Solve for x
x = 368,202,892,418,766,720/696,403,442.78 - Step 6: Final answer
x = 528,720,666.50
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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.