Finding the Fourth Proportional to 498,368.81, 688,648.58 and 354,879.74
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Solution
The fourth proportional to 498,368.81, 688,648.58 and 354,879.74 is: 490,374.65
Step by Step Solution
- Step 1: Write the proportion equation
498,368.81 : 688,648.58 = 354,879.74 : x - Step 2: Convert to fraction form
498,368.81/688,648.58 = 354,879.74/x - Step 3: Cross multiply
498,368.81x = 688,648.58 × 354,879.74 - Step 4: Simplify right side
498,368.81x = 244,387,426,465.73 - Step 5: Solve for x
x = 244,387,426,465.73/498,368.81 - Step 6: Final answer
x = 490,374.65
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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.