Finding the Fourth Proportional to 768,551.70, 1,152,869.60 and 319,317.99
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Solution
The fourth proportional to 768,551.70, 1,152,869.60 and 319,317.99 is: 478,994.45
Step by Step Solution
- Step 1: Write the proportion equation
768,551.70 : 1,152,869.60 = 319,317.99 : x - Step 2: Convert to fraction form
768,551.70/1,152,869.60 = 319,317.99/x - Step 3: Cross multiply
768,551.70x = 1,152,869.60 × 319,317.99 - Step 4: Simplify right side
768,551.70x = 368,132,001,807.51 - Step 5: Solve for x
x = 368,132,001,807.51/768,551.70 - Step 6: Final answer
x = 478,994.45
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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.