Finding the Fourth Proportional to 915,459.18, 1,263,271.95 and 528,290.69
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Solution
The fourth proportional to 915,459.18, 1,263,271.95 and 528,290.69 is: 729,005.53
Step by Step Solution
- Step 1: Write the proportion equation
915,459.18 : 1,263,271.95 = 528,290.69 : x - Step 2: Convert to fraction form
915,459.18/1,263,271.95 = 528,290.69/x - Step 3: Cross multiply
915,459.18x = 1,263,271.95 × 528,290.69 - Step 4: Simplify right side
915,459.18x = 667,374,803,806.79 - Step 5: Solve for x
x = 667,374,803,806.79/915,459.18 - Step 6: Final answer
x = 729,005.53
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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.