Finding the Fourth Proportional to 900,573.76, 1,242,670.08 and 513,439.12
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Solution
The fourth proportional to 900,573.76, 1,242,670.08 and 513,439.12 is: 708,476.60
Step by Step Solution
- Step 1: Write the proportion equation
900,573.76 : 1,242,670.08 = 513,439.12 : x - Step 2: Convert to fraction form
900,573.76/1,242,670.08 = 513,439.12/x - Step 3: Cross multiply
900,573.76x = 1,242,670.08 × 513,439.12 - Step 4: Simplify right side
900,573.76x = 638,035,432,325.53 - Step 5: Solve for x
x = 638,035,432,325.53/900,573.76 - Step 6: Final answer
x = 708,476.60
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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.