Finding the Fourth Proportional to 1,305,280,691.68, 1,957,921,037.52 and 443,637,683.68
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Solution
The fourth proportional to 1,305,280,691.68, 1,957,921,037.52 and 443,637,683.68 is: 665,456,525.52
Step by Step Solution
- Step 1: Write the proportion equation
1,305,280,691.68 : 1,957,921,037.52 = 443,637,683.68 : x - Step 2: Convert to fraction form
1,305,280,691.68/1,957,921,037.52 = 443,637,683.68/x - Step 3: Cross multiply
1,305,280,691.68x = 1,957,921,037.52 × 443,637,683.68 - Step 4: Simplify right side
1,305,280,691.68x = 868,607,553,913,715,200 - Step 5: Solve for x
x = 868,607,553,913,715,200/1,305,280,691.68 - Step 6: Final answer
x = 665,456,525.52
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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.