Finding the Fourth Proportional to 887,124,656.70, 1,330,686,985.05 and 657,542,144.70
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Solution
The fourth proportional to 887,124,656.70, 1,330,686,985.05 and 657,542,144.70 is: 986,313,217.05
Step by Step Solution
- Step 1: Write the proportion equation
887,124,656.70 : 1,330,686,985.05 = 657,542,144.70 : x - Step 2: Convert to fraction form
887,124,656.70/1,330,686,985.05 = 657,542,144.70/x - Step 3: Cross multiply
887,124,656.70x = 1,330,686,985.05 × 657,542,144.70 - Step 4: Simplify right side
887,124,656.70x = 874,982,774,074,153,856 - Step 5: Solve for x
x = 874,982,774,074,153,856/887,124,656.70 - Step 6: Final answer
x = 986,313,217.05
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Double scale
Find fourth proportional to 887,124,657.70, 1,330,686,986.55 and 657,542,145.70
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.