Home / 669,909.40-1,003,697.70-433,130.20

Finding the Fourth Proportional to 669,909.40, 1,003,697.70 and 433,130.20

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Solution

The fourth proportional to 669,909.40, 1,003,697.70 and 433,130.20 is: 648,941.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,909.40 : 1,003,697.70 = 433,130.20 : x
  2. Step 2: Convert to fraction form
    669,909.40/1,003,697.70 = 433,130.20/x
  3. Step 3: Cross multiply
    669,909.40x = 1,003,697.70 × 433,130.20
  4. Step 4: Simplify right side
    669,909.40x = 434,731,785,540.54
  5. Step 5: Solve for x
    x = 434,731,785,540.54/669,909.40
  6. Step 6: Final answer
    x = 648,941.16

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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.