Finding the Fourth Proportional to 778,479.34, 1,074,301.68 and 438,947.68
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Solution
The fourth proportional to 778,479.34, 1,074,301.68 and 438,947.68 is: 605,747.91
Step by Step Solution
- Step 1: Write the proportion equation
778,479.34 : 1,074,301.68 = 438,947.68 : x - Step 2: Convert to fraction form
778,479.34/1,074,301.68 = 438,947.68/x - Step 3: Cross multiply
778,479.34x = 1,074,301.68 × 438,947.68 - Step 4: Simplify right side
778,479.34x = 471,562,230,056.10 - Step 5: Solve for x
x = 471,562,230,056.10/778,479.34 - Step 6: Final answer
x = 605,747.91
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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.