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Finding the Fourth Proportional to 456,756.60, 684,216.36 and 256,777.32

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Solution

The fourth proportional to 456,756.60, 684,216.36 and 256,777.32 is: 384,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,756.60 : 684,216.36 = 256,777.32 : x
  2. Step 2: Convert to fraction form
    456,756.60/684,216.36 = 256,777.32/x
  3. Step 3: Cross multiply
    456,756.60x = 684,216.36 × 256,777.32
  4. Step 4: Simplify right side
    456,756.60x = 175,691,243,220.96
  5. Step 5: Solve for x
    x = 175,691,243,220.96/456,756.60
  6. Step 6: Final answer
    x = 384,649.60

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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.