Finding the Fourth Proportional to 1,390,368, 1,918,707.84 and 754,464
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Solution
The fourth proportional to 1,390,368, 1,918,707.84 and 754,464 is: 1,041,160.32
Step by Step Solution
- Step 1: Write the proportion equation
1,390,368 : 1,918,707.84 = 754,464 : x - Step 2: Convert to fraction form
1,390,368/1,918,707.84 = 754,464/x - Step 3: Cross multiply
1,390,368x = 1,918,707.84 × 754,464 - Step 4: Simplify right side
1,390,368x = 1,447,595,991,797.76 - Step 5: Solve for x
x = 1,447,595,991,797.76/1,390,368 - Step 6: Final answer
x = 1,041,160.32
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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.