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Finding the Fourth Proportional to 646,866.40, 970,299.60 and 292,280.80

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Solution

The fourth proportional to 646,866.40, 970,299.60 and 292,280.80 is: 438,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,866.40 : 970,299.60 = 292,280.80 : x
  2. Step 2: Convert to fraction form
    646,866.40/970,299.60 = 292,280.80/x
  3. Step 3: Cross multiply
    646,866.40x = 970,299.60 × 292,280.80
  4. Step 4: Simplify right side
    646,866.40x = 283,599,943,327.68
  5. Step 5: Solve for x
    x = 283,599,943,327.68/646,866.40
  6. Step 6: Final answer
    x = 438,421.20

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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.