Finding the Fourth Proportional to 643,723,013.24, 888,277,040.70 and 361,410,316.28
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Solution
The fourth proportional to 643,723,013.24, 888,277,040.70 and 361,410,316.28 is: 498,712,147.33
Step by Step Solution
- Step 1: Write the proportion equation
643,723,013.24 : 888,277,040.70 = 361,410,316.28 : x - Step 2: Convert to fraction form
643,723,013.24/888,277,040.70 = 361,410,316.28/x - Step 3: Cross multiply
643,723,013.24x = 888,277,040.70 × 361,410,316.28 - Step 4: Simplify right side
643,723,013.24x = 321,032,486,220,175,808 - Step 5: Solve for x
x = 321,032,486,220,175,808/643,723,013.24 - Step 6: Final answer
x = 498,712,147.33
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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.