Finding the Fourth Proportional to 637,120,362.51, 879,270,289.56 and 386,235,329.13
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Solution
The fourth proportional to 637,120,362.51, 879,270,289.56 and 386,235,329.13 is: 533,031,542.65
Step by Step Solution
- Step 1: Write the proportion equation
637,120,362.51 : 879,270,289.56 = 386,235,329.13 : x - Step 2: Convert to fraction form
637,120,362.51/879,270,289.56 = 386,235,329.13/x - Step 3: Cross multiply
637,120,362.51x = 879,270,289.56 × 386,235,329.13 - Step 4: Simplify right side
637,120,362.51x = 339,605,249,682,436,992 - Step 5: Solve for x
x = 339,605,249,682,436,992/637,120,362.51 - Step 6: Final answer
x = 533,031,542.65
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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.