Finding the Fourth Proportional to 712,913.84, 1,069,370.76 and 239,599.20
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Solution
The fourth proportional to 712,913.84, 1,069,370.76 and 239,599.20 is: 359,398.80
Step by Step Solution
- Step 1: Write the proportion equation
712,913.84 : 1,069,370.76 = 239,599.20 : x - Step 2: Convert to fraction form
712,913.84/1,069,370.76 = 239,599.20/x - Step 3: Cross multiply
712,913.84x = 1,069,370.76 × 239,599.20 - Step 4: Simplify right side
712,913.84x = 256,220,378,599.39 - Step 5: Solve for x
x = 256,220,378,599.39/712,913.84 - Step 6: Final answer
x = 359,398.80
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Similar ratio
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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.