Finding the Fourth Proportional to 578,623.80, 867,935.70 and 438,655.80
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Solution
The fourth proportional to 578,623.80, 867,935.70 and 438,655.80 is: 657,983.70
Step by Step Solution
- Step 1: Write the proportion equation
578,623.80 : 867,935.70 = 438,655.80 : x - Step 2: Convert to fraction form
578,623.80/867,935.70 = 438,655.80/x - Step 3: Cross multiply
578,623.80x = 867,935.70 × 438,655.80 - Step 4: Simplify right side
578,623.80x = 380,725,028,832.06 - Step 5: Solve for x
x = 380,725,028,832.06/578,623.80 - Step 6: Final answer
x = 657,983.70
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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.