Finding the Fourth Proportional to 905,721,805.60, 1,358,582,708.40 and 388,204,559.80
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Solution
The fourth proportional to 905,721,805.60, 1,358,582,708.40 and 388,204,559.80 is: 582,306,839.70
Step by Step Solution
- Step 1: Write the proportion equation
905,721,805.60 : 1,358,582,708.40 = 388,204,559.80 : x - Step 2: Convert to fraction form
905,721,805.60/1,358,582,708.40 = 388,204,559.80/x - Step 3: Cross multiply
905,721,805.60x = 1,358,582,708.40 × 388,204,559.80 - Step 4: Simplify right side
905,721,805.60x = 527,408,002,266,313,792 - Step 5: Solve for x
x = 527,408,002,266,313,792/905,721,805.60 - Step 6: Final answer
x = 582,306,839.70
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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.