Finding the Fourth Proportional to 639,595,352.80, 882,644,403.72 and 346,239,920.80
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Solution
The fourth proportional to 639,595,352.80, 882,644,403.72 and 346,239,920.80 is: 477,812,615.59
Step by Step Solution
- Step 1: Write the proportion equation
639,595,352.80 : 882,644,403.72 = 346,239,920.80 : x - Step 2: Convert to fraction form
639,595,352.80/882,644,403.72 = 346,239,920.80/x - Step 3: Cross multiply
639,595,352.80x = 882,644,403.72 × 346,239,920.80 - Step 4: Simplify right side
639,595,352.80x = 305,606,728,438,576,064 - Step 5: Solve for x
x = 305,606,728,438,576,064/639,595,352.80 - Step 6: Final answer
x = 477,812,615.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.