Finding the Fourth Proportional to 514,869.40, 772,304.10 and 425,639.80
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Solution
The fourth proportional to 514,869.40, 772,304.10 and 425,639.80 is: 638,459.70
Step by Step Solution
- Step 1: Write the proportion equation
514,869.40 : 772,304.10 = 425,639.80 : x - Step 2: Convert to fraction form
514,869.40/772,304.10 = 425,639.80/x - Step 3: Cross multiply
514,869.40x = 772,304.10 × 425,639.80 - Step 4: Simplify right side
514,869.40x = 328,723,362,663.18 - Step 5: Solve for x
x = 328,723,362,663.18/514,869.40 - Step 6: Final answer
x = 638,459.70
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1.5x scale
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.