Finding the Fourth Proportional to 1,272,470.04, 1,908,655.20 and 431,021.76
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Solution
The fourth proportional to 1,272,470.04, 1,908,655.20 and 431,021.76 is: 646,515.75
Step by Step Solution
- Step 1: Write the proportion equation
1,272,470.04 : 1,908,655.20 = 431,021.76 : x - Step 2: Convert to fraction form
1,272,470.04/1,908,655.20 = 431,021.76/x - Step 3: Cross multiply
1,272,470.04x = 1,908,655.20 × 431,021.76 - Step 4: Simplify right side
1,272,470.04x = 822,671,923,537.15 - Step 5: Solve for x
x = 822,671,923,537.15/1,272,470.04 - Step 6: Final answer
x = 646,515.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.