Finding the Fourth Proportional to 782,019,938.40, 1,174,283,283.60 and 621,794,248.80
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Solution
The fourth proportional to 782,019,938.40, 1,174,283,283.60 and 621,794,248.80 is: 933,687,948.80
Step by Step Solution
- Step 1: Write the proportion equation
782,019,938.40 : 1,174,283,283.60 = 621,794,248.80 : x - Step 2: Convert to fraction form
782,019,938.40/1,174,283,283.60 = 621,794,248.80/x - Step 3: Cross multiply
782,019,938.40x = 1,174,283,283.60 × 621,794,248.80 - Step 4: Simplify right side
782,019,938.40x = 730,162,592,204,459,264 - Step 5: Solve for x
x = 730,162,592,204,459,264/782,019,938.40 - Step 6: Final answer
x = 933,687,948.80
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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.