Finding the Fourth Proportional to 688,355.57, 949,874.99 and 397,985.76
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Solution
The fourth proportional to 688,355.57, 949,874.99 and 397,985.76 is: 549,188.14
Step by Step Solution
- Step 1: Write the proportion equation
688,355.57 : 949,874.99 = 397,985.76 : x - Step 2: Convert to fraction form
688,355.57/949,874.99 = 397,985.76/x - Step 3: Cross multiply
688,355.57x = 949,874.99 × 397,985.76 - Step 4: Simplify right side
688,355.57x = 378,036,717,810.21 - Step 5: Solve for x
x = 378,036,717,810.21/688,355.57 - Step 6: Final answer
x = 549,188.14
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.