Finding the Fourth Proportional to 1,390,113.42, 2,085,484.55 and 750,403.43
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Solution
The fourth proportional to 1,390,113.42, 2,085,484.55 and 750,403.43 is: 1,125,774.87
Step by Step Solution
- Step 1: Write the proportion equation
1,390,113.42 : 2,085,484.55 = 750,403.43 : x - Step 2: Convert to fraction form
1,390,113.42/2,085,484.55 = 750,403.43/x - Step 3: Cross multiply
1,390,113.42x = 2,085,484.55 × 750,403.43 - Step 4: Simplify right side
1,390,113.42x = 1,564,954,759,270.16 - Step 5: Solve for x
x = 1,564,954,759,270.16/1,390,113.42 - Step 6: Final answer
x = 1,125,774.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.