Finding the Fourth Proportional to 1,386,999.90, 2,081,191.05 and 788,420.70
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Solution
The fourth proportional to 1,386,999.90, 2,081,191.05 and 788,420.70 is: 1,183,023.95
Step by Step Solution
- Step 1: Write the proportion equation
1,386,999.90 : 2,081,191.05 = 788,420.70 : x - Step 2: Convert to fraction form
1,386,999.90/2,081,191.05 = 788,420.70/x - Step 3: Cross multiply
1,386,999.90x = 2,081,191.05 × 788,420.70 - Step 4: Simplify right side
1,386,999.90x = 1,640,854,104,474.74 - Step 5: Solve for x
x = 1,640,854,104,474.74/1,386,999.90 - Step 6: Final answer
x = 1,183,023.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.