Finding the Fourth Proportional to 873,245,841.40, 1,309,868,762.10 and 861,766,715.80
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Solution
The fourth proportional to 873,245,841.40, 1,309,868,762.10 and 861,766,715.80 is: 1,292,650,073.70
Step by Step Solution
- Step 1: Write the proportion equation
873,245,841.40 : 1,309,868,762.10 = 861,766,715.80 : x - Step 2: Convert to fraction form
873,245,841.40/1,309,868,762.10 = 861,766,715.80/x - Step 3: Cross multiply
873,245,841.40x = 1,309,868,762.10 × 861,766,715.80 - Step 4: Simplify right side
873,245,841.40x = 1,128,801,301,243,928,320 - Step 5: Solve for x
x = 1,128,801,301,243,928,320/873,245,841.40 - Step 6: Final answer
x = 1,292,650,073.70
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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.