Finding the Fourth Proportional to 687,545.64, 948,798.68 and 381,604.08
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Solution
The fourth proportional to 687,545.64, 948,798.68 and 381,604.08 is: 526,605.69
Step by Step Solution
- Step 1: Write the proportion equation
687,545.64 : 948,798.68 = 381,604.08 : x - Step 2: Convert to fraction form
687,545.64/948,798.68 = 381,604.08/x - Step 3: Cross multiply
687,545.64x = 948,798.68 × 381,604.08 - Step 4: Simplify right side
687,545.64x = 362,065,445,478.59 - Step 5: Solve for x
x = 362,065,445,478.59/687,545.64 - Step 6: Final answer
x = 526,605.69
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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.