Finding the Fourth Proportional to 918,720, 1,378,263.95 and 514,487.06
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Solution
The fourth proportional to 918,720, 1,378,263.95 and 514,487.06 is: 771,833.60
Step by Step Solution
- Step 1: Write the proportion equation
918,720 : 1,378,263.95 = 514,487.06 : x - Step 2: Convert to fraction form
918,720/1,378,263.95 = 514,487.06/x - Step 3: Cross multiply
918,720x = 1,378,263.95 × 514,487.06 - Step 4: Simplify right side
918,720x = 709,098,967,539.49 - Step 5: Solve for x
x = 709,098,967,539.49/918,720 - Step 6: Final answer
x = 771,833.60
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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.