Home / 812,823.60-1,121,683.92-445,297.76

Finding the Fourth Proportional to 812,823.60, 1,121,683.92 and 445,297.76

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Solution

The fourth proportional to 812,823.60, 1,121,683.92 and 445,297.76 is: 614,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,823.60 : 1,121,683.92 = 445,297.76 : x
  2. Step 2: Convert to fraction form
    812,823.60/1,121,683.92 = 445,297.76/x
  3. Step 3: Cross multiply
    812,823.60x = 1,121,683.92 × 445,297.76
  4. Step 4: Simplify right side
    812,823.60x = 499,483,337,004.02
  5. Step 5: Solve for x
    x = 499,483,337,004.02/812,823.60
  6. Step 6: Final answer
    x = 614,503.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.