Home / 839,389.22-1,258,961.20-412,810.56

Finding the Fourth Proportional to 839,389.22, 1,258,961.20 and 412,810.56

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Solution

The fourth proportional to 839,389.22, 1,258,961.20 and 412,810.56 is: 619,155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,389.22 : 1,258,961.20 = 412,810.56 : x
  2. Step 2: Convert to fraction form
    839,389.22/1,258,961.20 = 412,810.56/x
  3. Step 3: Cross multiply
    839,389.22x = 1,258,961.20 × 412,810.56
  4. Step 4: Simplify right side
    839,389.22x = 519,712,477,818.18
  5. Step 5: Solve for x
    x = 519,712,477,818.18/839,389.22
  6. Step 6: Final answer
    x = 619,155.53

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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.