Finding the Fourth Proportional to 807,788,485.80, 1,211,682,728.70 and 316,338,421.05
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Solution
The fourth proportional to 807,788,485.80, 1,211,682,728.70 and 316,338,421.05 is: 474,507,631.58
Step by Step Solution
- Step 1: Write the proportion equation
807,788,485.80 : 1,211,682,728.70 = 316,338,421.05 : x - Step 2: Convert to fraction form
807,788,485.80/1,211,682,728.70 = 316,338,421.05/x - Step 3: Cross multiply
807,788,485.80x = 1,211,682,728.70 × 316,338,421.05 - Step 4: Simplify right side
807,788,485.80x = 383,301,801,210,513,536 - Step 5: Solve for x
x = 383,301,801,210,513,536/807,788,485.80 - Step 6: Final answer
x = 474,507,631.58
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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.