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Finding the Fourth Proportional to 968,907.20, 1,453,879.20 and 407,998.40

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Solution

The fourth proportional to 968,907.20, 1,453,879.20 and 407,998.40 is: 612,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    968,907.20 : 1,453,879.20 = 407,998.40 : x
  2. Step 2: Convert to fraction form
    968,907.20/1,453,879.20 = 407,998.40/x
  3. Step 3: Cross multiply
    968,907.20x = 1,453,879.20 × 407,998.40
  4. Step 4: Simplify right side
    968,907.20x = 593,180,387,393.28
  5. Step 5: Solve for x
    x = 593,180,387,393.28/968,907.20
  6. Step 6: Final answer
    x = 612,215.89

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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.