Finding the Fourth Proportional to 420,799.84, 580,319.12 and 328,931.28
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Solution
The fourth proportional to 420,799.84, 580,319.12 and 328,931.28 is: 453,624.49
Step by Step Solution
- Step 1: Write the proportion equation
420,799.84 : 580,319.12 = 328,931.28 : x - Step 2: Convert to fraction form
420,799.84/580,319.12 = 328,931.28/x - Step 3: Cross multiply
420,799.84x = 580,319.12 × 328,931.28 - Step 4: Simplify right side
420,799.84x = 190,885,110,950.07 - Step 5: Solve for x
x = 190,885,110,950.07/420,799.84 - Step 6: Final answer
x = 453,624.49
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.