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Finding the Fourth Proportional to 648,007.20, 970,698.60 and 367,196.40

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Solution

The fourth proportional to 648,007.20, 970,698.60 and 367,196.40 is: 550,051.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,007.20 : 970,698.60 = 367,196.40 : x
  2. Step 2: Convert to fraction form
    648,007.20/970,698.60 = 367,196.40/x
  3. Step 3: Cross multiply
    648,007.20x = 970,698.60 × 367,196.40
  4. Step 4: Simplify right side
    648,007.20x = 356,437,031,405.04
  5. Step 5: Solve for x
    x = 356,437,031,405.04/648,007.20
  6. Step 6: Final answer
    x = 550,051.04

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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.