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Finding the Fourth Proportional to 607,709.70, 911,564.55 and 439,748.10

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Solution

The fourth proportional to 607,709.70, 911,564.55 and 439,748.10 is: 659,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,709.70 : 911,564.55 = 439,748.10 : x
  2. Step 2: Convert to fraction form
    607,709.70/911,564.55 = 439,748.10/x
  3. Step 3: Cross multiply
    607,709.70x = 911,564.55 × 439,748.10
  4. Step 4: Simplify right side
    607,709.70x = 400,858,778,889.86
  5. Step 5: Solve for x
    x = 400,858,778,889.86/607,709.70
  6. Step 6: Final answer
    x = 659,622.15

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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.