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Finding the Fourth Proportional to 525,784.60, 788,676.90 and 437,138.20

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Solution

The fourth proportional to 525,784.60, 788,676.90 and 437,138.20 is: 655,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,784.60 : 788,676.90 = 437,138.20 : x
  2. Step 2: Convert to fraction form
    525,784.60/788,676.90 = 437,138.20/x
  3. Step 3: Cross multiply
    525,784.60x = 788,676.90 × 437,138.20
  4. Step 4: Simplify right side
    525,784.60x = 344,760,800,447.58
  5. Step 5: Solve for x
    x = 344,760,800,447.58/525,784.60
  6. Step 6: Final answer
    x = 655,707.30

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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.