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Finding the Fourth Proportional to 656,742.40, 985,113.60 and 507,200.81

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Solution

The fourth proportional to 656,742.40, 985,113.60 and 507,200.81 is: 760,801.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,742.40 : 985,113.60 = 507,200.81 : x
  2. Step 2: Convert to fraction form
    656,742.40/985,113.60 = 507,200.81/x
  3. Step 3: Cross multiply
    656,742.40x = 985,113.60 × 507,200.81
  4. Step 4: Simplify right side
    656,742.40x = 499,650,408,400.44
  5. Step 5: Solve for x
    x = 499,650,408,400.44/656,742.40
  6. Step 6: Final answer
    x = 760,801.21

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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.