Home / 874,140.28-1,311,435.78-474,678.52

Finding the Fourth Proportional to 874,140.28, 1,311,435.78 and 474,678.52

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Solution

The fourth proportional to 874,140.28, 1,311,435.78 and 474,678.52 is: 712,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,140.28 : 1,311,435.78 = 474,678.52 : x
  2. Step 2: Convert to fraction form
    874,140.28/1,311,435.78 = 474,678.52/x
  3. Step 3: Cross multiply
    874,140.28x = 1,311,435.78 × 474,678.52
  4. Step 4: Simplify right side
    874,140.28x = 622,510,395,125.45
  5. Step 5: Solve for x
    x = 622,510,395,125.45/874,140.28
  6. Step 6: Final answer
    x = 712,140.16

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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.