Finding the Fourth Proportional to 438,617,735.80, 657,926,603.70 and 425,863,151.80
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Solution
The fourth proportional to 438,617,735.80, 657,926,603.70 and 425,863,151.80 is: 638,794,727.70
Step by Step Solution
- Step 1: Write the proportion equation
438,617,735.80 : 657,926,603.70 = 425,863,151.80 : x - Step 2: Convert to fraction form
438,617,735.80/657,926,603.70 = 425,863,151.80/x - Step 3: Cross multiply
438,617,735.80x = 657,926,603.70 × 425,863,151.80 - Step 4: Simplify right side
438,617,735.80x = 280,186,697,104,751,584 - Step 5: Solve for x
x = 280,186,697,104,751,584/438,617,735.80 - Step 6: Final answer
x = 638,794,727.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.