Finding the Fourth Proportional to 525,312,151.80, 787,968,227.70 and 238,657,687.80
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Solution
The fourth proportional to 525,312,151.80, 787,968,227.70 and 238,657,687.80 is: 357,986,531.70
Step by Step Solution
- Step 1: Write the proportion equation
525,312,151.80 : 787,968,227.70 = 238,657,687.80 : x - Step 2: Convert to fraction form
525,312,151.80/787,968,227.70 = 238,657,687.80/x - Step 3: Cross multiply
525,312,151.80x = 787,968,227.70 × 238,657,687.80 - Step 4: Simplify right side
525,312,151.80x = 188,054,675,282,745,920 - Step 5: Solve for x
x = 188,054,675,282,745,920/525,312,151.80 - Step 6: Final answer
x = 357,986,531.70
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1.5x scale
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.