Home / 751,785.70-1,128,002.55-436,512.10

Finding the Fourth Proportional to 751,785.70, 1,128,002.55 and 436,512.10

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Solution

The fourth proportional to 751,785.70, 1,128,002.55 and 436,512.10 is: 654,956.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,785.70 : 1,128,002.55 = 436,512.10 : x
  2. Step 2: Convert to fraction form
    751,785.70/1,128,002.55 = 436,512.10/x
  3. Step 3: Cross multiply
    751,785.70x = 1,128,002.55 × 436,512.10
  4. Step 4: Simplify right side
    751,785.70x = 492,386,761,905.86
  5. Step 5: Solve for x
    x = 492,386,761,905.86/751,785.70
  6. Step 6: Final answer
    x = 654,956.28

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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.