Finding the Fourth Proportional to 509,652.81, 703,305.99 and 280,209.85
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Solution
The fourth proportional to 509,652.81, 703,305.99 and 280,209.85 is: 386,681.40
Step by Step Solution
- Step 1: Write the proportion equation
509,652.81 : 703,305.99 = 280,209.85 : x - Step 2: Convert to fraction form
509,652.81/703,305.99 = 280,209.85/x - Step 3: Cross multiply
509,652.81x = 703,305.99 × 280,209.85 - Step 4: Simplify right side
509,652.81x = 197,073,264,203.74 - Step 5: Solve for x
x = 197,073,264,203.74/509,652.81 - Step 6: Final answer
x = 386,681.40
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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.