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Finding the Fourth Proportional to 646,912.60, 970,368.90 and 488,282.20

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Solution

The fourth proportional to 646,912.60, 970,368.90 and 488,282.20 is: 732,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,912.60 : 970,368.90 = 488,282.20 : x
  2. Step 2: Convert to fraction form
    646,912.60/970,368.90 = 488,282.20/x
  3. Step 3: Cross multiply
    646,912.60x = 970,368.90 × 488,282.20
  4. Step 4: Simplify right side
    646,912.60x = 473,813,861,303.58
  5. Step 5: Solve for x
    x = 473,813,861,303.58/646,912.60
  6. Step 6: Final answer
    x = 732,423.30

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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.