Finding the Fourth Proportional to 900,038.66, 1,242,366.09 and 518,217.62
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Solution
The fourth proportional to 900,038.66, 1,242,366.09 and 518,217.62 is: 715,320.38
Step by Step Solution
- Step 1: Write the proportion equation
900,038.66 : 1,242,366.09 = 518,217.62 : x - Step 2: Convert to fraction form
900,038.66/1,242,366.09 = 518,217.62/x - Step 3: Cross multiply
900,038.66x = 1,242,366.09 × 518,217.62 - Step 4: Simplify right side
900,038.66x = 643,815,992,116.68 - Step 5: Solve for x
x = 643,815,992,116.68/900,038.66 - Step 6: Final answer
x = 715,320.38
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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.