Finding the Fourth Proportional to 1,056,420.18, 1,457,879.70 and 648,317.74
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Solution
The fourth proportional to 1,056,420.18, 1,457,879.70 and 648,317.74 is: 894,690.66
Step by Step Solution
- Step 1: Write the proportion equation
1,056,420.18 : 1,457,879.70 = 648,317.74 : x - Step 2: Convert to fraction form
1,056,420.18/1,457,879.70 = 648,317.74/x - Step 3: Cross multiply
1,056,420.18x = 1,457,879.70 × 648,317.74 - Step 4: Simplify right side
1,056,420.18x = 945,169,272,295.88 - Step 5: Solve for x
x = 945,169,272,295.88/1,056,420.18 - Step 6: Final answer
x = 894,690.66
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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.