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Finding the Fourth Proportional to 646,989.70, 970,484.55 and 173,722.90

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Solution

The fourth proportional to 646,989.70, 970,484.55 and 173,722.90 is: 260,584.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,989.70 : 970,484.55 = 173,722.90 : x
  2. Step 2: Convert to fraction form
    646,989.70/970,484.55 = 173,722.90/x
  3. Step 3: Cross multiply
    646,989.70x = 970,484.55 × 173,722.90
  4. Step 4: Simplify right side
    646,989.70x = 168,595,390,431.20
  5. Step 5: Solve for x
    x = 168,595,390,431.20/646,989.70
  6. Step 6: Final answer
    x = 260,584.35

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Half scale
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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.