Finding the Fourth Proportional to 665,862.68, 999,045.78 and 399,808.28
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Solution
The fourth proportional to 665,862.68, 999,045.78 and 399,808.28 is: 599,863.59
Step by Step Solution
- Step 1: Write the proportion equation
665,862.68 : 999,045.78 = 399,808.28 : x - Step 2: Convert to fraction form
665,862.68/999,045.78 = 399,808.28/x - Step 3: Cross multiply
665,862.68x = 999,045.78 × 399,808.28 - Step 4: Simplify right side
665,862.68x = 399,426,774,943.06 - Step 5: Solve for x
x = 399,426,774,943.06/665,862.68 - Step 6: Final answer
x = 599,863.59
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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.