Finding the Fourth Proportional to 539,474,948.40, 756,030,202.80 and 539,474,948.40
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Solution
The fourth proportional to 539,474,948.40, 756,030,202.80 and 539,474,948.40 is: 756,030,202.80
Step by Step Solution
- Step 1: Write the proportion equation
539,474,948.40 : 756,030,202.80 = 539,474,948.40 : x - Step 2: Convert to fraction form
539,474,948.40/756,030,202.80 = 539,474,948.40/x - Step 3: Cross multiply
539,474,948.40x = 756,030,202.80 × 539,474,948.40 - Step 4: Simplify right side
539,474,948.40x = 407,859,354,644,371,520 - Step 5: Solve for x
x = 407,859,354,644,371,520/539,474,948.40 - Step 6: Final answer
x = 756,030,202.80
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.