Finding the Fourth Proportional to 486,749,420.29, 671,747,155.93 and 274,982,803.21
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Solution
The fourth proportional to 486,749,420.29, 671,747,155.93 and 274,982,803.21 is: 379,494,886.46
Step by Step Solution
- Step 1: Write the proportion equation
486,749,420.29 : 671,747,155.93 = 274,982,803.21 : x - Step 2: Convert to fraction form
486,749,420.29/671,747,155.93 = 274,982,803.21/x - Step 3: Cross multiply
486,749,420.29x = 671,747,155.93 × 274,982,803.21 - Step 4: Simplify right side
486,749,420.29x = 184,718,915,985,976,352 - Step 5: Solve for x
x = 184,718,915,985,976,352/486,749,420.29 - Step 6: Final answer
x = 379,494,886.46
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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.