Finding the Fourth Proportional to 557,931.08, 769,980.66 and 312,938.84
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Solution
The fourth proportional to 557,931.08, 769,980.66 and 312,938.84 is: 431,875.66
Step by Step Solution
- Step 1: Write the proportion equation
557,931.08 : 769,980.66 = 312,938.84 : x - Step 2: Convert to fraction form
557,931.08/769,980.66 = 312,938.84/x - Step 3: Cross multiply
557,931.08x = 769,980.66 × 312,938.84 - Step 4: Simplify right side
557,931.08x = 240,956,854,562.83 - Step 5: Solve for x
x = 240,956,854,562.83/557,931.08 - Step 6: Final answer
x = 431,875.66
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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.