Home / 879,429.20-1,314,996.60-655,480.40

Finding the Fourth Proportional to 879,429.20, 1,314,996.60 and 655,480.40

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Solution

The fourth proportional to 879,429.20, 1,314,996.60 and 655,480.40 is: 980,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,429.20 : 1,314,996.60 = 655,480.40 : x
  2. Step 2: Convert to fraction form
    879,429.20/1,314,996.60 = 655,480.40/x
  3. Step 3: Cross multiply
    879,429.20x = 1,314,996.60 × 655,480.40
  4. Step 4: Simplify right side
    879,429.20x = 861,954,497,366.64
  5. Step 5: Solve for x
    x = 861,954,497,366.64/879,429.20
  6. Step 6: Final answer
    x = 980,129.49

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1.5x scale

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.