Home / 709,430.40-1,064,145.60-443,491.20

Finding the Fourth Proportional to 709,430.40, 1,064,145.60 and 443,491.20

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Solution

The fourth proportional to 709,430.40, 1,064,145.60 and 443,491.20 is: 665,236.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,430.40 : 1,064,145.60 = 443,491.20 : x
  2. Step 2: Convert to fraction form
    709,430.40/1,064,145.60 = 443,491.20/x
  3. Step 3: Cross multiply
    709,430.40x = 1,064,145.60 × 443,491.20
  4. Step 4: Simplify right side
    709,430.40x = 471,939,209,118.72
  5. Step 5: Solve for x
    x = 471,939,209,118.72/709,430.40
  6. Step 6: Final answer
    x = 665,236.80

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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.