Finding the Fourth Proportional to 1,205,896,824.64, 1,664,225,957.28 and 677,292,137.92
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Solution
The fourth proportional to 1,205,896,824.64, 1,664,225,957.28 and 677,292,137.92 is: 934,712,766.10
Step by Step Solution
- Step 1: Write the proportion equation
1,205,896,824.64 : 1,664,225,957.28 = 677,292,137.92 : x - Step 2: Convert to fraction form
1,205,896,824.64/1,664,225,957.28 = 677,292,137.92/x - Step 3: Cross multiply
1,205,896,824.64x = 1,664,225,957.28 × 677,292,137.92 - Step 4: Simplify right side
1,205,896,824.64x = 1,127,167,156,588,129,664 - Step 5: Solve for x
x = 1,127,167,156,588,129,664/1,205,896,824.64 - Step 6: Final answer
x = 934,712,766.10
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.