Finding the Fourth Proportional to 885,742,974.80, 1,328,614,462.20 and 516,899,301.20
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Solution
The fourth proportional to 885,742,974.80, 1,328,614,462.20 and 516,899,301.20 is: 775,348,951.80
Step by Step Solution
- Step 1: Write the proportion equation
885,742,974.80 : 1,328,614,462.20 = 516,899,301.20 : x - Step 2: Convert to fraction form
885,742,974.80/1,328,614,462.20 = 516,899,301.20/x - Step 3: Cross multiply
885,742,974.80x = 1,328,614,462.20 × 516,899,301.20 - Step 4: Simplify right side
885,742,974.80x = 686,759,887,075,393,792 - Step 5: Solve for x
x = 686,759,887,075,393,792/885,742,974.80 - Step 6: Final answer
x = 775,348,951.80
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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.