Finding the Fourth Proportional to 553,346.18, 763,646.15 and 338,418.75
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Solution
The fourth proportional to 553,346.18, 763,646.15 and 338,418.75 is: 467,035.26
Step by Step Solution
- Step 1: Write the proportion equation
553,346.18 : 763,646.15 = 338,418.75 : x - Step 2: Convert to fraction form
553,346.18/763,646.15 = 338,418.75/x - Step 3: Cross multiply
553,346.18x = 763,646.15 × 338,418.75 - Step 4: Simplify right side
553,346.18x = 258,432,176,371.36 - Step 5: Solve for x
x = 258,432,176,371.36/553,346.18 - Step 6: Final answer
x = 467,035.26
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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.