Finding the Fourth Proportional to 680,903,905.07, 939,618,356.80 and 379,473,177.10
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Solution
The fourth proportional to 680,903,905.07, 939,618,356.80 and 379,473,177.10 is: 523,656,804.52
Step by Step Solution
- Step 1: Write the proportion equation
680,903,905.07 : 939,618,356.80 = 379,473,177.10 : x - Step 2: Convert to fraction form
680,903,905.07/939,618,356.80 = 379,473,177.10/x - Step 3: Cross multiply
680,903,905.07x = 939,618,356.80 × 379,473,177.10 - Step 4: Simplify right side
680,903,905.07x = 356,559,963,116,377,408 - Step 5: Solve for x
x = 356,559,963,116,377,408/680,903,905.07 - Step 6: Final answer
x = 523,656,804.52
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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.