Finding the Fourth Proportional to 1,021,567.36, 1,408,513.80 and 638,929.84
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Solution
The fourth proportional to 1,021,567.36, 1,408,513.80 and 638,929.84 is: 880,941.91
Step by Step Solution
- Step 1: Write the proportion equation
1,021,567.36 : 1,408,513.80 = 638,929.84 : x - Step 2: Convert to fraction form
1,021,567.36/1,408,513.80 = 638,929.84/x - Step 3: Cross multiply
1,021,567.36x = 1,408,513.80 × 638,929.84 - Step 4: Simplify right side
1,021,567.36x = 899,941,496,871.79 - Step 5: Solve for x
x = 899,941,496,871.79/1,021,567.36 - Step 6: Final answer
x = 880,941.91
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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.