Home / 652,021.20-977,448.60-427,489.20

Finding the Fourth Proportional to 652,021.20, 977,448.60 and 427,489.20

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Solution

The fourth proportional to 652,021.20, 977,448.60 and 427,489.20 is: 640,851.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,021.20 : 977,448.60 = 427,489.20 : x
  2. Step 2: Convert to fraction form
    652,021.20/977,448.60 = 427,489.20/x
  3. Step 3: Cross multiply
    652,021.20x = 977,448.60 × 427,489.20
  4. Step 4: Simplify right side
    652,021.20x = 417,848,720,055.12
  5. Step 5: Solve for x
    x = 417,848,720,055.12/652,021.20
  6. Step 6: Final answer
    x = 640,851.43

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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.