Finding the Fourth Proportional to 977,678,617.79, 1,349,155,422.99 and 554,320,759.77
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Solution
The fourth proportional to 977,678,617.79, 1,349,155,422.99 and 554,320,759.77 is: 764,939,363.01
Step by Step Solution
- Step 1: Write the proportion equation
977,678,617.79 : 1,349,155,422.99 = 554,320,759.77 : x - Step 2: Convert to fraction form
977,678,617.79/1,349,155,422.99 = 554,320,759.77/x - Step 3: Cross multiply
977,678,617.79x = 1,349,155,422.99 × 554,320,759.77 - Step 4: Simplify right side
977,678,617.79x = 747,864,859,119,632,512 - Step 5: Solve for x
x = 747,864,859,119,632,512/977,678,617.79 - Step 6: Final answer
x = 764,939,363.01
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1.5x scale
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.