Home / 664,621.30-996,931.95-384,685.30

Finding the Fourth Proportional to 664,621.30, 996,931.95 and 384,685.30

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Solution

The fourth proportional to 664,621.30, 996,931.95 and 384,685.30 is: 577,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,621.30 : 996,931.95 = 384,685.30 : x
  2. Step 2: Convert to fraction form
    664,621.30/996,931.95 = 384,685.30/x
  3. Step 3: Cross multiply
    664,621.30x = 996,931.95 × 384,685.30
  4. Step 4: Simplify right side
    664,621.30x = 383,505,066,265.34
  5. Step 5: Solve for x
    x = 383,505,066,265.34/664,621.30
  6. Step 6: Final answer
    x = 577,027.95

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Half scale
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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.