Finding the Fourth Proportional to 1,007,479.62, 1,390,420.08 and 752,387.94
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Solution
The fourth proportional to 1,007,479.62, 1,390,420.08 and 752,387.94 is: 1,038,368.70
Step by Step Solution
- Step 1: Write the proportion equation
1,007,479.62 : 1,390,420.08 = 752,387.94 : x - Step 2: Convert to fraction form
1,007,479.62/1,390,420.08 = 752,387.94/x - Step 3: Cross multiply
1,007,479.62x = 1,390,420.08 × 752,387.94 - Step 4: Simplify right side
1,007,479.62x = 1,046,135,299,725.84 - Step 5: Solve for x
x = 1,046,135,299,725.84/1,007,479.62 - Step 6: Final answer
x = 1,038,368.70
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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.