Home / 868,939.40-1,303,409.10-719,640.20

Finding the Fourth Proportional to 868,939.40, 1,303,409.10 and 719,640.20

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Solution

The fourth proportional to 868,939.40, 1,303,409.10 and 719,640.20 is: 1,079,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,939.40 : 1,303,409.10 = 719,640.20 : x
  2. Step 2: Convert to fraction form
    868,939.40/1,303,409.10 = 719,640.20/x
  3. Step 3: Cross multiply
    868,939.40x = 1,303,409.10 × 719,640.20
  4. Step 4: Simplify right side
    868,939.40x = 937,985,585,405.82
  5. Step 5: Solve for x
    x = 937,985,585,405.82/868,939.40
  6. Step 6: Final answer
    x = 1,079,460.30

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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.