Finding the Fourth Proportional to 887,124,987.20, 1,330,687,480.80 and 657,542,475.20
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Solution
The fourth proportional to 887,124,987.20, 1,330,687,480.80 and 657,542,475.20 is: 986,313,712.80
Step by Step Solution
- Step 1: Write the proportion equation
887,124,987.20 : 1,330,687,480.80 = 657,542,475.20 : x - Step 2: Convert to fraction form
887,124,987.20/1,330,687,480.80 = 657,542,475.20/x - Step 3: Cross multiply
887,124,987.20x = 1,330,687,480.80 × 657,542,475.20 - Step 4: Simplify right side
887,124,987.20x = 874,983,539,842,884,480 - Step 5: Solve for x
x = 874,983,539,842,884,480/887,124,987.20 - Step 6: Final answer
x = 986,313,712.80
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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.