Finding the Fourth Proportional to 866,205,875.80, 1,299,308,813.70 and 770,971,648.60
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Solution
The fourth proportional to 866,205,875.80, 1,299,308,813.70 and 770,971,648.60 is: 1,156,457,472.90
Step by Step Solution
- Step 1: Write the proportion equation
866,205,875.80 : 1,299,308,813.70 = 770,971,648.60 : x - Step 2: Convert to fraction form
866,205,875.80/1,299,308,813.70 = 770,971,648.60/x - Step 3: Cross multiply
866,205,875.80x = 1,299,308,813.70 × 770,971,648.60 - Step 4: Simplify right side
866,205,875.80x = 1,001,730,258,138,799,360 - Step 5: Solve for x
x = 1,001,730,258,138,799,360/866,205,875.80 - Step 6: Final answer
x = 1,156,457,472.90
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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.