Finding the Fourth Proportional to 1,242,440.12, 1,710,336.12 and 919,541.72
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Solution
The fourth proportional to 1,242,440.12, 1,710,336.12 and 919,541.72 is: 1,265,835.99
Step by Step Solution
- Step 1: Write the proportion equation
1,242,440.12 : 1,710,336.12 = 919,541.72 : x - Step 2: Convert to fraction form
1,242,440.12/1,710,336.12 = 919,541.72/x - Step 3: Cross multiply
1,242,440.12x = 1,710,336.12 × 919,541.72 - Step 4: Simplify right side
1,242,440.12x = 1,572,725,417,562.93 - Step 5: Solve for x
x = 1,572,725,417,562.93/1,242,440.12 - Step 6: Final answer
x = 1,265,835.99
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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.