Finding the Fourth Proportional to 644,697,106.48, 889,673,496.52 and 358,586,703.28
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Solution
The fourth proportional to 644,697,106.48, 889,673,496.52 and 358,586,703.28 is: 494,844,916.95
Step by Step Solution
- Step 1: Write the proportion equation
644,697,106.48 : 889,673,496.52 = 358,586,703.28 : x - Step 2: Convert to fraction form
644,697,106.48/889,673,496.52 = 358,586,703.28/x - Step 3: Cross multiply
644,697,106.48x = 889,673,496.52 × 358,586,703.28 - Step 4: Simplify right side
644,697,106.48x = 319,025,086,112,697,344 - Step 5: Solve for x
x = 319,025,086,112,697,344/644,697,106.48 - Step 6: Final answer
x = 494,844,916.95
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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.