Finding the Fourth Proportional to 712,350.99, 983,066.63 and 390,091.68
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Solution
The fourth proportional to 712,350.99, 983,066.63 and 390,091.68 is: 538,338.71
Step by Step Solution
- Step 1: Write the proportion equation
712,350.99 : 983,066.63 = 390,091.68 : x - Step 2: Convert to fraction form
712,350.99/983,066.63 = 390,091.68/x - Step 3: Cross multiply
712,350.99x = 983,066.63 × 390,091.68 - Step 4: Simplify right side
712,350.99x = 383,486,111,298.18 - Step 5: Solve for x
x = 383,486,111,298.18/712,350.99 - Step 6: Final answer
x = 538,338.71
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.