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Finding the Fourth Proportional to 683,432.80, 1,025,991.60 and 430,712.80

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Solution

The fourth proportional to 683,432.80, 1,025,991.60 and 430,712.80 is: 646,600.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,432.80 : 1,025,991.60 = 430,712.80 : x
  2. Step 2: Convert to fraction form
    683,432.80/1,025,991.60 = 430,712.80/x
  3. Step 3: Cross multiply
    683,432.80x = 1,025,991.60 × 430,712.80
  4. Step 4: Simplify right side
    683,432.80x = 441,907,714,812.48
  5. Step 5: Solve for x
    x = 441,907,714,812.48/683,432.80
  6. Step 6: Final answer
    x = 646,600.10

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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.