Finding the Fourth Proportional to 485,572,465.80, 728,358,698.70 and 434,554,129.80
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Solution
The fourth proportional to 485,572,465.80, 728,358,698.70 and 434,554,129.80 is: 651,831,194.70
Step by Step Solution
- Step 1: Write the proportion equation
485,572,465.80 : 728,358,698.70 = 434,554,129.80 : x - Step 2: Convert to fraction form
485,572,465.80/728,358,698.70 = 434,554,129.80/x - Step 3: Cross multiply
485,572,465.80x = 728,358,698.70 × 434,554,129.80 - Step 4: Simplify right side
485,572,465.80x = 316,511,280,495,838,912 - Step 5: Solve for x
x = 316,511,280,495,838,912/485,572,465.80 - Step 6: Final answer
x = 651,831,194.70
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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.