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Finding the Fourth Proportional to 523,217.70, 784,826.55 and 487,788.30

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Solution

The fourth proportional to 523,217.70, 784,826.55 and 487,788.30 is: 731,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,217.70 : 784,826.55 = 487,788.30 : x
  2. Step 2: Convert to fraction form
    523,217.70/784,826.55 = 487,788.30/x
  3. Step 3: Cross multiply
    523,217.70x = 784,826.55 × 487,788.30
  4. Step 4: Simplify right side
    523,217.70x = 382,829,208,619.37
  5. Step 5: Solve for x
    x = 382,829,208,619.37/523,217.70
  6. Step 6: Final answer
    x = 731,682.45

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Half scale
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Double scale
Find fourth proportional to 523,218.70, 784,828.05 and 487,789.30
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.