Finding the Fourth Proportional to 606,931.80, 910,397.70 and 212,947.80
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Solution
The fourth proportional to 606,931.80, 910,397.70 and 212,947.80 is: 319,421.70
Step by Step Solution
- Step 1: Write the proportion equation
606,931.80 : 910,397.70 = 212,947.80 : x - Step 2: Convert to fraction form
606,931.80/910,397.70 = 212,947.80/x - Step 3: Cross multiply
606,931.80x = 910,397.70 × 212,947.80 - Step 4: Simplify right side
606,931.80x = 193,867,187,340.06 - Step 5: Solve for x
x = 193,867,187,340.06/606,931.80 - Step 6: Final answer
x = 319,421.70
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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.