Finding the Fourth Proportional to 716,671.58, 988,981.98 and 394,351.52
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Solution
The fourth proportional to 716,671.58, 988,981.98 and 394,351.52 is: 544,191.45
Step by Step Solution
- Step 1: Write the proportion equation
716,671.58 : 988,981.98 = 394,351.52 : x - Step 2: Convert to fraction form
716,671.58/988,981.98 = 394,351.52/x - Step 3: Cross multiply
716,671.58x = 988,981.98 × 394,351.52 - Step 4: Simplify right side
716,671.58x = 390,006,547,065.61 - Step 5: Solve for x
x = 390,006,547,065.61/716,671.58 - Step 6: Final answer
x = 544,191.45
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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.