Finding the Fourth Proportional to 390,976.49, 584,038.93 and 283,507.31
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Solution
The fourth proportional to 390,976.49, 584,038.93 and 283,507.31 is: 423,501.95
Step by Step Solution
- Step 1: Write the proportion equation
390,976.49 : 584,038.93 = 283,507.31 : x - Step 2: Convert to fraction form
390,976.49/584,038.93 = 283,507.31/x - Step 3: Cross multiply
390,976.49x = 584,038.93 × 283,507.31 - Step 4: Simplify right side
390,976.49x = 165,579,305,979.58 - Step 5: Solve for x
x = 165,579,305,979.58/390,976.49 - Step 6: Final answer
x = 423,501.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.