Home / 646,986.70-970,480.05-423,037.90

Finding the Fourth Proportional to 646,986.70, 970,480.05 and 423,037.90

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Solution

The fourth proportional to 646,986.70, 970,480.05 and 423,037.90 is: 634,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,986.70 : 970,480.05 = 423,037.90 : x
  2. Step 2: Convert to fraction form
    646,986.70/970,480.05 = 423,037.90/x
  3. Step 3: Cross multiply
    646,986.70x = 970,480.05 × 423,037.90
  4. Step 4: Simplify right side
    646,986.70x = 410,549,842,343.90
  5. Step 5: Solve for x
    x = 410,549,842,343.90/646,986.70
  6. Step 6: Final answer
    x = 634,556.85

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Double scale
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Similar ratio
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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.