Finding the Fourth Proportional to 1,312,950.40, 1,968,259.20 and 779,905.60
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Solution
The fourth proportional to 1,312,950.40, 1,968,259.20 and 779,905.60 is: 1,169,165.55
Step by Step Solution
- Step 1: Write the proportion equation
1,312,950.40 : 1,968,259.20 = 779,905.60 : x - Step 2: Convert to fraction form
1,312,950.40/1,968,259.20 = 779,905.60/x - Step 3: Cross multiply
1,312,950.40x = 1,968,259.20 × 779,905.60 - Step 4: Simplify right side
1,312,950.40x = 1,535,056,372,331.52 - Step 5: Solve for x
x = 1,535,056,372,331.52/1,312,950.40 - Step 6: Final answer
x = 1,169,165.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.