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Finding the Fourth Proportional to 571,253.70, 856,880.55 and 480,015.30

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Solution

The fourth proportional to 571,253.70, 856,880.55 and 480,015.30 is: 720,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,253.70 : 856,880.55 = 480,015.30 : x
  2. Step 2: Convert to fraction form
    571,253.70/856,880.55 = 480,015.30/x
  3. Step 3: Cross multiply
    571,253.70x = 856,880.55 × 480,015.30
  4. Step 4: Simplify right side
    571,253.70x = 411,315,774,272.42
  5. Step 5: Solve for x
    x = 411,315,774,272.42/571,253.70
  6. Step 6: Final answer
    x = 720,022.95

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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.