Finding the Fourth Proportional to 717,901.13, 990,710.06 and 395,622.78
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Solution
The fourth proportional to 717,901.13, 990,710.06 and 395,622.78 is: 545,963.02
Step by Step Solution
- Step 1: Write the proportion equation
717,901.13 : 990,710.06 = 395,622.78 : x - Step 2: Convert to fraction form
717,901.13/990,710.06 = 395,622.78/x - Step 3: Cross multiply
717,901.13x = 990,710.06 × 395,622.78 - Step 4: Simplify right side
717,901.13x = 391,947,466,133.05 - Step 5: Solve for x
x = 391,947,466,133.05/717,901.13 - Step 6: Final answer
x = 545,963.02
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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.