Finding the Fourth Proportional to 513,072.92, 708,041.58 and 286,718.42
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Solution
The fourth proportional to 513,072.92, 708,041.58 and 286,718.42 is: 395,671.95
Step by Step Solution
- Step 1: Write the proportion equation
513,072.92 : 708,041.58 = 286,718.42 : x - Step 2: Convert to fraction form
513,072.92/708,041.58 = 286,718.42/x - Step 3: Cross multiply
513,072.92x = 708,041.58 × 286,718.42 - Step 4: Simplify right side
513,072.92x = 203,008,563,111.90 - Step 5: Solve for x
x = 203,008,563,111.90/513,072.92 - Step 6: Final answer
x = 395,671.95
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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.