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Finding the Fourth Proportional to 683,448.80, 1,026,015.60 and 430,728.80

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Solution

The fourth proportional to 683,448.80, 1,026,015.60 and 430,728.80 is: 646,624.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,448.80 : 1,026,015.60 = 430,728.80 : x
  2. Step 2: Convert to fraction form
    683,448.80/1,026,015.60 = 430,728.80/x
  3. Step 3: Cross multiply
    683,448.80x = 1,026,015.60 × 430,728.80
  4. Step 4: Simplify right side
    683,448.80x = 441,934,468,169.28
  5. Step 5: Solve for x
    x = 441,934,468,169.28/683,448.80
  6. Step 6: Final answer
    x = 646,624.10

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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.