Home / 756,005.20-1,134,007.80-437,140.60

Finding the Fourth Proportional to 756,005.20, 1,134,007.80 and 437,140.60

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Solution

The fourth proportional to 756,005.20, 1,134,007.80 and 437,140.60 is: 655,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,005.20 : 1,134,007.80 = 437,140.60 : x
  2. Step 2: Convert to fraction form
    756,005.20/1,134,007.80 = 437,140.60/x
  3. Step 3: Cross multiply
    756,005.20x = 1,134,007.80 × 437,140.60
  4. Step 4: Simplify right side
    756,005.20x = 495,720,850,096.68
  5. Step 5: Solve for x
    x = 495,720,850,096.68/756,005.20
  6. Step 6: Final answer
    x = 655,710.90

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Double scale
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Similar ratio
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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.