Finding the Fourth Proportional to 722,989,779,520.05, 997,695,935,160.21 and 393,394,178,578.95
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Solution
The fourth proportional to 722,989,779,520.05, 997,695,935,160.21 and 393,394,178,578.95 is: 542,867,664,248.94
Step by Step Solution
- Step 1: Write the proportion equation
722,989,779,520.05 : 997,695,935,160.21 = 393,394,178,578.95 : x - Step 2: Convert to fraction form
722,989,779,520.05/997,695,935,160.21 = 393,394,178,578.95/x - Step 3: Cross multiply
722,989,779,520.05x = 997,695,935,160.21 × 393,394,178,578.95 - Step 4: Simplify right side
722,989,779,520.05x = 392,487,772,883,908,181,360,640 - Step 5: Solve for x
x = 392,487,772,883,908,181,360,640/722,989,779,520.05 - Step 6: Final answer
x = 542,867,664,248.94
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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.