Finding the Fourth Proportional to 887,124,965.70, 1,330,687,448.55 and 657,542,453.70
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Solution
The fourth proportional to 887,124,965.70, 1,330,687,448.55 and 657,542,453.70 is: 986,313,680.55
Step by Step Solution
- Step 1: Write the proportion equation
887,124,965.70 : 1,330,687,448.55 = 657,542,453.70 : x - Step 2: Convert to fraction form
887,124,965.70/1,330,687,448.55 = 657,542,453.70/x - Step 3: Cross multiply
887,124,965.70x = 1,330,687,448.55 × 657,542,453.70 - Step 4: Simplify right side
887,124,965.70x = 874,983,490,027,359,488 - Step 5: Solve for x
x = 874,983,490,027,359,488/887,124,965.70 - Step 6: Final answer
x = 986,313,680.55
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Double scale
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Similar ratio
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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.