Home / 738,142.20-1,107,731.70-472,548.60

Finding the Fourth Proportional to 738,142.20, 1,107,731.70 and 472,548.60

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Solution

The fourth proportional to 738,142.20, 1,107,731.70 and 472,548.60 is: 709,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,142.20 : 1,107,731.70 = 472,548.60 : x
  2. Step 2: Convert to fraction form
    738,142.20/1,107,731.70 = 472,548.60/x
  3. Step 3: Cross multiply
    738,142.20x = 1,107,731.70 × 472,548.60
  4. Step 4: Simplify right side
    738,142.20x = 523,457,064,010.62
  5. Step 5: Solve for x
    x = 523,457,064,010.62/738,142.20
  6. Step 6: Final answer
    x = 709,154.77

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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.