Finding the Fourth Proportional to 630,905.80, 870,663.18 and 344,437.96
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Solution
The fourth proportional to 630,905.80, 870,663.18 and 344,437.96 is: 475,331.58
Step by Step Solution
- Step 1: Write the proportion equation
630,905.80 : 870,663.18 = 344,437.96 : x - Step 2: Convert to fraction form
630,905.80/870,663.18 = 344,437.96/x - Step 3: Cross multiply
630,905.80x = 870,663.18 × 344,437.96 - Step 4: Simplify right side
630,905.80x = 299,889,449,566.31 - Step 5: Solve for x
x = 299,889,449,566.31/630,905.80 - Step 6: Final answer
x = 475,331.58
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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.