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Finding the Fourth Proportional to 646,575.40, 970,899.90 and 437,141.80

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Solution

The fourth proportional to 646,575.40, 970,899.90 and 437,141.80 is: 656,413.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,575.40 : 970,899.90 = 437,141.80 : x
  2. Step 2: Convert to fraction form
    646,575.40/970,899.90 = 437,141.80/x
  3. Step 3: Cross multiply
    646,575.40x = 970,899.90 × 437,141.80
  4. Step 4: Simplify right side
    646,575.40x = 424,420,929,905.82
  5. Step 5: Solve for x
    x = 424,420,929,905.82/646,575.40
  6. Step 6: Final answer
    x = 656,413.67

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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.