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Finding the Fourth Proportional to 688,027.74, 949,491 and 382,132.45

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Solution

The fourth proportional to 688,027.74, 949,491 and 382,132.45 is: 527,349.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,027.74 : 949,491 = 382,132.45 : x
  2. Step 2: Convert to fraction form
    688,027.74/949,491 = 382,132.45/x
  3. Step 3: Cross multiply
    688,027.74x = 949,491 × 382,132.45
  4. Step 4: Simplify right side
    688,027.74x = 362,831,322,082.95
  5. Step 5: Solve for x
    x = 362,831,322,082.95/688,027.74
  6. Step 6: Final answer
    x = 527,349.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.