Finding the Fourth Proportional to 1,330,561,310.40, 1,995,841,965.60 and 553,948,862.40
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Solution
The fourth proportional to 1,330,561,310.40, 1,995,841,965.60 and 553,948,862.40 is: 830,923,293.60
Step by Step Solution
- Step 1: Write the proportion equation
1,330,561,310.40 : 1,995,841,965.60 = 553,948,862.40 : x - Step 2: Convert to fraction form
1,330,561,310.40/1,995,841,965.60 = 553,948,862.40/x - Step 3: Cross multiply
1,330,561,310.40x = 1,995,841,965.60 × 553,948,862.40 - Step 4: Simplify right side
1,330,561,310.40x = 1,105,594,386,374,299,776 - Step 5: Solve for x
x = 1,105,594,386,374,299,776/1,330,561,310.40 - Step 6: Final answer
x = 830,923,293.60
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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.