Home / 670,721.60-1,005,736.80-249,780.80

Finding the Fourth Proportional to 670,721.60, 1,005,736.80 and 249,780.80

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Solution

The fourth proportional to 670,721.60, 1,005,736.80 and 249,780.80 is: 374,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,721.60 : 1,005,736.80 = 249,780.80 : x
  2. Step 2: Convert to fraction form
    670,721.60/1,005,736.80 = 249,780.80/x
  3. Step 3: Cross multiply
    670,721.60x = 1,005,736.80 × 249,780.80
  4. Step 4: Simplify right side
    670,721.60x = 251,213,742,493.44
  5. Step 5: Solve for x
    x = 251,213,742,493.44/670,721.60
  6. Step 6: Final answer
    x = 374,542.50

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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.