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Finding the Fourth Proportional to 524,076.40, 786,114.60 and 485,585.20

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Solution

The fourth proportional to 524,076.40, 786,114.60 and 485,585.20 is: 728,377.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,076.40 : 786,114.60 = 485,585.20 : x
  2. Step 2: Convert to fraction form
    524,076.40/786,114.60 = 485,585.20/x
  3. Step 3: Cross multiply
    524,076.40x = 786,114.60 × 485,585.20
  4. Step 4: Simplify right side
    524,076.40x = 381,725,615,263.92
  5. Step 5: Solve for x
    x = 381,725,615,263.92/524,076.40
  6. Step 6: Final answer
    x = 728,377.80

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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.