Finding the Fourth Proportional to 756,248.10, 1,134,372.15 and 476,312.10
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Solution
The fourth proportional to 756,248.10, 1,134,372.15 and 476,312.10 is: 714,468.15
Step by Step Solution
- Step 1: Write the proportion equation
756,248.10 : 1,134,372.15 = 476,312.10 : x - Step 2: Convert to fraction form
756,248.10/1,134,372.15 = 476,312.10/x - Step 3: Cross multiply
756,248.10x = 1,134,372.15 × 476,312.10 - Step 4: Simplify right side
756,248.10x = 540,315,180,948.02 - Step 5: Solve for x
x = 540,315,180,948.02/756,248.10 - Step 6: Final answer
x = 714,468.15
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.