Finding the Fourth Proportional to 930,607.76, 1,284,210.74 and 517,143.14
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Solution
The fourth proportional to 930,607.76, 1,284,210.74 and 517,143.14 is: 713,641.99
Step by Step Solution
- Step 1: Write the proportion equation
930,607.76 : 1,284,210.74 = 517,143.14 : x - Step 2: Convert to fraction form
930,607.76/1,284,210.74 = 517,143.14/x - Step 3: Cross multiply
930,607.76x = 1,284,210.74 × 517,143.14 - Step 4: Simplify right side
930,607.76x = 664,120,779,008.71 - Step 5: Solve for x
x = 664,120,779,008.71/930,607.76 - Step 6: Final answer
x = 713,641.99
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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.