Finding the Fourth Proportional to 663,896,312.70, 995,844,469.05 and 618,546,680.70
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Solution
The fourth proportional to 663,896,312.70, 995,844,469.05 and 618,546,680.70 is: 927,820,021.05
Step by Step Solution
- Step 1: Write the proportion equation
663,896,312.70 : 995,844,469.05 = 618,546,680.70 : x - Step 2: Convert to fraction form
663,896,312.70/995,844,469.05 = 618,546,680.70/x - Step 3: Cross multiply
663,896,312.70x = 995,844,469.05 × 618,546,680.70 - Step 4: Simplify right side
663,896,312.70x = 615,976,290,824,331,392 - Step 5: Solve for x
x = 615,976,290,824,331,392/663,896,312.70 - Step 6: Final answer
x = 927,820,021.05
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Double scale
Find fourth proportional to 663,896,313.70, 995,844,470.55 and 618,546,681.70
Similar ratio
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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.