Home / 781,120.29-1,077,895.12-436,896.58

Finding the Fourth Proportional to 781,120.29, 1,077,895.12 and 436,896.58

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Solution

The fourth proportional to 781,120.29, 1,077,895.12 and 436,896.58 is: 602,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,120.29 : 1,077,895.12 = 436,896.58 : x
  2. Step 2: Convert to fraction form
    781,120.29/1,077,895.12 = 436,896.58/x
  3. Step 3: Cross multiply
    781,120.29x = 1,077,895.12 × 436,896.58
  4. Step 4: Simplify right side
    781,120.29x = 470,928,691,526.69
  5. Step 5: Solve for x
    x = 470,928,691,526.69/781,120.29
  6. Step 6: Final answer
    x = 602,888.82

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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.