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Finding the Fourth Proportional to 607,491.20, 911,236.80 and 572,499.20

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Solution

The fourth proportional to 607,491.20, 911,236.80 and 572,499.20 is: 858,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,491.20 : 911,236.80 = 572,499.20 : x
  2. Step 2: Convert to fraction form
    607,491.20/911,236.80 = 572,499.20/x
  3. Step 3: Cross multiply
    607,491.20x = 911,236.80 × 572,499.20
  4. Step 4: Simplify right side
    607,491.20x = 521,682,339,010.56
  5. Step 5: Solve for x
    x = 521,682,339,010.56/607,491.20
  6. Step 6: Final answer
    x = 858,748.80

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Double scale
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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.