Finding the Fourth Proportional to 3,172,359.79, 4,377,862.07 and 1,722,056.21
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Solution
The fourth proportional to 3,172,359.79, 4,377,862.07 and 1,722,056.21 is: 2,376,440.59
Step by Step Solution
- Step 1: Write the proportion equation
3,172,359.79 : 4,377,862.07 = 1,722,056.21 : x - Step 2: Convert to fraction form
3,172,359.79/4,377,862.07 = 1,722,056.21/x - Step 3: Cross multiply
3,172,359.79x = 4,377,862.07 × 1,722,056.21 - Step 4: Simplify right side
3,172,359.79x = 7,538,924,564,166.96 - Step 5: Solve for x
x = 7,538,924,564,166.96/3,172,359.79 - Step 6: Final answer
x = 2,376,440.59
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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.