Finding the Fourth Proportional to 668,056.76, 921,323.06 and 520,918.08
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Solution
The fourth proportional to 668,056.76, 921,323.06 and 520,918.08 is: 718,402.80
Step by Step Solution
- Step 1: Write the proportion equation
668,056.76 : 921,323.06 = 520,918.08 : x - Step 2: Convert to fraction form
668,056.76/921,323.06 = 520,918.08/x - Step 3: Cross multiply
668,056.76x = 921,323.06 × 520,918.08 - Step 4: Simplify right side
668,056.76x = 479,933,840,325.30 - Step 5: Solve for x
x = 479,933,840,325.30/668,056.76 - Step 6: Final answer
x = 718,402.80
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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.