Finding the Fourth Proportional to 1,430,678.07, 1,972,980.23 and 939,784.05
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Solution
The fourth proportional to 1,430,678.07, 1,972,980.23 and 939,784.05 is: 1,296,011.58
Step by Step Solution
- Step 1: Write the proportion equation
1,430,678.07 : 1,972,980.23 = 939,784.05 : x - Step 2: Convert to fraction form
1,430,678.07/1,972,980.23 = 939,784.05/x - Step 3: Cross multiply
1,430,678.07x = 1,972,980.23 × 939,784.05 - Step 4: Simplify right side
1,430,678.07x = 1,854,175,346,420.41 - Step 5: Solve for x
x = 1,854,175,346,420.41/1,430,678.07 - Step 6: Final answer
x = 1,296,011.58
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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.