Finding the Fourth Proportional to 915,624,175.80, 1,373,436,263.70 and 879,911,340.60
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Solution
The fourth proportional to 915,624,175.80, 1,373,436,263.70 and 879,911,340.60 is: 1,319,867,010.90
Step by Step Solution
- Step 1: Write the proportion equation
915,624,175.80 : 1,373,436,263.70 = 879,911,340.60 : x - Step 2: Convert to fraction form
915,624,175.80/1,373,436,263.70 = 879,911,340.60/x - Step 3: Cross multiply
915,624,175.80x = 1,373,436,263.70 × 879,911,340.60 - Step 4: Simplify right side
915,624,175.80x = 1,208,502,144,020,922,112 - Step 5: Solve for x
x = 1,208,502,144,020,922,112/915,624,175.80 - Step 6: Final answer
x = 1,319,867,010.90
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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.