Finding the Fourth Proportional to 1,021,564.36, 1,408,509.66 and 638,926.84
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Solution
The fourth proportional to 1,021,564.36, 1,408,509.66 and 638,926.84 is: 880,937.77
Step by Step Solution
- Step 1: Write the proportion equation
1,021,564.36 : 1,408,509.66 = 638,926.84 : x - Step 2: Convert to fraction form
1,021,564.36/1,408,509.66 = 638,926.84/x - Step 3: Cross multiply
1,021,564.36x = 1,408,509.66 × 638,926.84 - Step 4: Simplify right side
1,021,564.36x = 899,934,626,173.27 - Step 5: Solve for x
x = 899,934,626,173.27/1,021,564.36 - Step 6: Final answer
x = 880,937.77
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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.