Home / 1,285,355.71-1,928,303.30-386,863.21

Finding the Fourth Proportional to 1,285,355.71, 1,928,303.30 and 386,863.21

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Solution

The fourth proportional to 1,285,355.71, 1,928,303.30 and 386,863.21 is: 580,376.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,355.71 : 1,928,303.30 = 386,863.21 : x
  2. Step 2: Convert to fraction form
    1,285,355.71/1,928,303.30 = 386,863.21/x
  3. Step 3: Cross multiply
    1,285,355.71x = 1,928,303.30 × 386,863.21
  4. Step 4: Simplify right side
    1,285,355.71x = 745,989,604,491.59
  5. Step 5: Solve for x
    x = 745,989,604,491.59/1,285,355.71
  6. Step 6: Final answer
    x = 580,376.00

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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.