Home / 646,811.10-970,216.65-422,862.30

Finding the Fourth Proportional to 646,811.10, 970,216.65 and 422,862.30

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Solution

The fourth proportional to 646,811.10, 970,216.65 and 422,862.30 is: 634,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,811.10 : 970,216.65 = 422,862.30 : x
  2. Step 2: Convert to fraction form
    646,811.10/970,216.65 = 422,862.30/x
  3. Step 3: Cross multiply
    646,811.10x = 970,216.65 × 422,862.30
  4. Step 4: Simplify right side
    646,811.10x = 410,268,044,117.30
  5. Step 5: Solve for x
    x = 410,268,044,117.30/646,811.10
  6. Step 6: Final answer
    x = 634,293.45

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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.