Finding the Fourth Proportional to 679,945,219.80, 1,019,917,829.70 and 664,828,675.80
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Solution
The fourth proportional to 679,945,219.80, 1,019,917,829.70 and 664,828,675.80 is: 997,243,013.70
Step by Step Solution
- Step 1: Write the proportion equation
679,945,219.80 : 1,019,917,829.70 = 664,828,675.80 : x - Step 2: Convert to fraction form
679,945,219.80/1,019,917,829.70 = 664,828,675.80/x - Step 3: Cross multiply
679,945,219.80x = 1,019,917,829.70 × 664,828,675.80 - Step 4: Simplify right side
679,945,219.80x = 678,070,620,144,260,864 - Step 5: Solve for x
x = 678,070,620,144,260,864/679,945,219.80 - Step 6: Final answer
x = 997,243,013.70
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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.