Finding the Fourth Proportional to 692,015.08, 954,980.94 and 390,209.08
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Solution
The fourth proportional to 692,015.08, 954,980.94 and 390,209.08 is: 538,488.60
Step by Step Solution
- Step 1: Write the proportion equation
692,015.08 : 954,980.94 = 390,209.08 : x - Step 2: Convert to fraction form
692,015.08/954,980.94 = 390,209.08/x - Step 3: Cross multiply
692,015.08x = 954,980.94 × 390,209.08 - Step 4: Simplify right side
692,015.08x = 372,642,234,014.94 - Step 5: Solve for x
x = 372,642,234,014.94/692,015.08 - Step 6: Final answer
x = 538,488.60
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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.