Home / 646,581.40-970,908.90-437,147.80

Finding the Fourth Proportional to 646,581.40, 970,908.90 and 437,147.80

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Solution

The fourth proportional to 646,581.40, 970,908.90 and 437,147.80 is: 656,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,581.40 : 970,908.90 = 437,147.80 : x
  2. Step 2: Convert to fraction form
    646,581.40/970,908.90 = 437,147.80/x
  3. Step 3: Cross multiply
    646,581.40x = 970,908.90 × 437,147.80
  4. Step 4: Simplify right side
    646,581.40x = 424,430,689,635.42
  5. Step 5: Solve for x
    x = 424,430,689,635.42/646,581.40
  6. Step 6: Final answer
    x = 656,422.67

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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.