Home / 748,880.20-1,123,320.30-430,015.60

Finding the Fourth Proportional to 748,880.20, 1,123,320.30 and 430,015.60

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Solution

The fourth proportional to 748,880.20, 1,123,320.30 and 430,015.60 is: 645,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,880.20 : 1,123,320.30 = 430,015.60 : x
  2. Step 2: Convert to fraction form
    748,880.20/1,123,320.30 = 430,015.60/x
  3. Step 3: Cross multiply
    748,880.20x = 1,123,320.30 × 430,015.60
  4. Step 4: Simplify right side
    748,880.20x = 483,045,252,796.68
  5. Step 5: Solve for x
    x = 483,045,252,796.68/748,880.20
  6. Step 6: Final answer
    x = 645,023.40

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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.