Home / 652,015.20-977,439.60-427,483.20

Finding the Fourth Proportional to 652,015.20, 977,439.60 and 427,483.20

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Solution

The fourth proportional to 652,015.20, 977,439.60 and 427,483.20 is: 640,842.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,015.20 : 977,439.60 = 427,483.20 : x
  2. Step 2: Convert to fraction form
    652,015.20/977,439.60 = 427,483.20/x
  3. Step 3: Cross multiply
    652,015.20x = 977,439.60 × 427,483.20
  4. Step 4: Simplify right side
    652,015.20x = 417,839,008,014.72
  5. Step 5: Solve for x
    x = 417,839,008,014.72/652,015.20
  6. Step 6: Final answer
    x = 640,842.43

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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.