Finding the Fourth Proportional to 1,005,730.63, 1,387,908.20 and 553,021.63
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Solution
The fourth proportional to 1,005,730.63, 1,387,908.20 and 553,021.63 is: 763,169.81
Step by Step Solution
- Step 1: Write the proportion equation
1,005,730.63 : 1,387,908.20 = 553,021.63 : x - Step 2: Convert to fraction form
1,005,730.63/1,387,908.20 = 553,021.63/x - Step 3: Cross multiply
1,005,730.63x = 1,387,908.20 × 553,021.63 - Step 4: Simplify right side
1,005,730.63x = 767,543,252,967.15 - Step 5: Solve for x
x = 767,543,252,967.15/1,005,730.63 - Step 6: Final answer
x = 763,169.81
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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.