Finding the Fourth Proportional to 521,108,153.18, 781,687,369.41 and 171,346,477.62
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Solution
The fourth proportional to 521,108,153.18, 781,687,369.41 and 171,346,477.62 is: 257,027,982.65
Step by Step Solution
- Step 1: Write the proportion equation
521,108,153.18 : 781,687,369.41 = 171,346,477.62 : x - Step 2: Convert to fraction form
521,108,153.18/781,687,369.41 = 171,346,477.62/x - Step 3: Cross multiply
521,108,153.18x = 781,687,369.41 × 171,346,477.62 - Step 4: Simplify right side
521,108,153.18x = 133,939,377,352,021,120 - Step 5: Solve for x
x = 133,939,377,352,021,120/521,108,153.18 - Step 6: Final answer
x = 257,027,982.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.